In an effort to boost milk production, some dairy farmers are treating cows with a genetically engineered hormone called BST. Consumer groups have opposed the use of BST even though the milk of BST-treated cows is identical in nutritional value to that of untreated cows; the treated cows run a greater risk of infection and hence are more likely to be given antibiotics, which may show up in their milk. In high levels, these antibiotics may be harmful to humans. Yet the milk of treated and untreated cows alike is regularly screened for antibiotics.

Summary
Dairy farmers use BST to boost cow milk production. Some people oppose BST because it puts cows at a higher risk of infection. A higher risk of infections leads to more frequent use of antibiotics, which could appear in milk and be harmful at high levels. Milk from BST and non-BST cows is regularly screened for antibiotics.

Strongly Supported Conclusions
If BST milk is not screened, it cannot be regarded as 100% safe.
If it is safe, then the milk has been scanned.

A
Consumer groups have no legitimate reasons for opposing the use of BST.
This is anti-supported. The stimulus explains that some groups are opposed due to the presence of antibodies, which can be dangerous to humans.
B
Milk from BST-treated cows is as safe for human consumption as that from untreated cows.
This is anti-supported. The stimulus raises concerns about the potential for high amounts of antibiotics to be in BST milk.
C
There is no advantage to the use of BST on dairy cows.
This is anti-supported. The stimulus details that BST boosts milk production.
D
Milk from BST-treated cows can be presumed safe for humans only if it is successfully screened for high levels of antibiotics.
The stimulus explains that the notable difference between BST and non-BST milk is the potential increased concentration of antibiotics. Thus, if it is safe for humans, it must have been screened for antibiotics.
E
The only threat posed by drinking milk from cows treated with BST is high levels of antibiotics.
This is too strong to support. The stimulus does not claim that a heightened level of antibiotics is the *only* threat posed by BST milk, just that it is one of them.

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Legislator: University humanities departments bring in less tuition and grant money than science departments. But because teaching and research cost significantly less in the humanities than in the sciences, humanities departments bring in more money than they spend while the reverse is true of science departments. As a result, contrary to the typical characterization that humanities departments freeload on science departments, humanities departments actually subsidize science departments. Thus, it is a mistake for universities to cut humanities departments when facing budget shortfalls.

Summarize Argument
The Legislator concludes that it is a mistake for universities to cut humanities departments when facing budget shortfalls for several reasons:
Teaching and research in the humanities costs less
(Sub-conclusion) So Humanities departments bring in more money than they spend
(Sub-conclusion) So Humanities departments subsidize science departments

Identify Argument Part
The claim in the first part of the second sentence is a premise offered in support of a sub-conclusion, which is offered as support for the Legislator’s main conclusion.

A
It is offered as support for the accuracy of an alleged stereotype.
There is no support offered for the stereotype in the third sentence.
B
It is an alleged stereotype rejected in the argument’s overall conclusion.
The claim is not a stereotype and the claim is not rejected by the Legislator.
C
It is put forward as a component of an explanation for a premise of the argument.
The claim is used as support for a sub-conclusion of the argument which is used to support the Legislator’s main conclusion.
D
It is an intermediate conclusion from which the argument’s overall conclusion is inferred.
The claim is used as support for a sub-conclusion of the argument. The claim itself is not a sub-conclusion.
E
It is one of many claims each presented as independent support for the argument’s overall conclusion.
The claim is not independent support for the Legislator’s main conclusion.

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Certain changes in North American residential architecture after World War II are attributable mainly to the increased availability and affordability of air-conditioning. Soon after World War II, many builders found that air-conditioned houses lacking the high ceilings and thick walls that traditionally kept residents cool during extreme heat generally sold well.

Summarize Argument: Phenomenon-Hypothesis
Certain changes in North American residential architecture after World War II (low ceilings and thin walls) were mainly due to the increased availability and affordability of air conditioning. This is because air-conditioned houses without high ceilings and thick walls sold well after World War II, even though those features typically kept houses cool during times of extreme heat.

Notable Assumptions
The author assumes that the increased prevalence of low ceilings and thin walls was not due to something else like people changing their preferences/tastes about how they wanted their home to look.

A
High ceilings and thick walls enable houses to withstand many types of severe weather that are common in North America.
This is irrelevant because it does not address the main claim that the changes in architecture were due to the increased affordability and availability of air conditioning.
B
Thin-walled, low-ceilinged houses are more costly to heat in winter than thick-walled, high-ceilinged houses.
Although this provides a weakness for the feasibility of thin-walled, low-ceilinged houses, it does not weaken the argument for the main claim that air conditioning caused these architectural changes
C
Houses with low ceilings and thin walls were prevalent in North America even where there was no demand for residential air-conditioning.
This suggests that thin-walled houses with low ceilings were prevalent *before* the widespread availability of AC. Thus, this weakens the claim that AC was the primary driver of these architectural changes
D
Thin walls allow cool, air-conditioned air to escape more readily from houses than do thick walls.
This does not weaken the author’s argument that the increased availability of air conditioning increased the prevalence of houses with thin walls and low ceilings. It just highlights an inefficiency of the new homes.
E
Soon after World War II, new thermal-insulating technology was widely applied in house building.
While this could explain why these houses became more common, it does not weaken the causal link between the increased availability of AC and thin-walled houses with low ceilings.

71 comments

McKee: Heckling the performer is a long-standing tradition of stand-up comedy. The performers know this and learn to respond entertainingly. That’s why it’s unwise for comedy venues to prevent audience members from heckling.

Chapman: Heckling is only a long-standing tradition of comedy because it’s tolerated. And it’s usually only fun for the heckler. In most cases, heckling is just a distraction from the performance.

Speaker 1 Summary
McKee thinks that comedy venues shouldn’t prevent heckling. Why? For two reasons. First, heckling is a long-standing tradition in stand-up comedy. Second, comedians are able to give entertaining responses to heckling.

Speaker 2 Summary
Chapman argues toward the implied conclusion that venues should prevent heckling. To support this point, Chapman says that heckling is only a tradition because it’s tolerated, not for any merit of its own. Chapman also claims that heckling is usually a distraction that’s only fun for the heckler, rather than a source of entertainment.

Objective
We need to find the statement that McKee and Chapman do not disagree on. This could be a point of agreement, or something that at least one speaker is neutral about. One such point is that comedians’ responses to hecklers can sometimes be entertaining.

A
Comedy venues should tolerate audience members’ heckling the performers.
McKee agrees with this but Chapman disagrees. McKee states this claim explicitly. Chapman undermines McKee’s argument by pointing out problems with allowing heckling, which supports the unstated conclusion that venues should ban heckling.
B
Stand-up comedians’ responses to heckling should be considered part of their stand-up comedy performance.
McKee agrees with this, but Chapman disagrees. McKee thinks that comedians’ responses to heckling are a source of entertainment for the audience. Chapman calls heckling a “distraction” rather than part of the comedy routine.
C
The best stand-up comedians are able to respond entertainingly when they are heckled by audience members.
McKee agrees and Chapman states no opinion, so this is where the speakers don’t disagree. McKee says comedians in general respond entertainingly. Chapman says heckling is usually distracting, but leaves open the possibility that some skilled comedians can make it entertaining.
D
Many audience members at comedy venues enjoy watching stand-up comedians respond to heckling.
McKee agrees and Chapman disagrees. McKee calls performers’ response to heckling entertaining, which means that audiences are entertained. Chapman, however, says that heckling is distracting and only fun for the heckler, meaning the audience in general is not entertained.
E
It is unwise for comedy venues to disregard long-standing traditions of stand-up comedy.
McKee agrees but Chapman disagrees. McKee thinks it’s unwise for venues to ban heckling, which is a tradition—hence, it’s unwise for venues to ignore a particular tradition. Chapman’s conclusion is the opposite, that venues should ignore the tradition of heckling.

17 comments