Self-study
In an effort to boost milk production, some dairy farmers are treating cows with a genetically engineered hormone called BST. ████████ ██████ ████ ███████ ███ ███ ██ ███ ████ ██████ ███ ████ ██ ███████████ ████ ██ █████████ ██ ███████████ █████ ██ ████ ██ █████████ █████ ███ ███████ ████ ███ █ ███████ ████ ██ █████████ ███ █████ ███ ████ ██████ ██ ██ █████ ████████████ █████ ███ ████ ██ ██ █████ █████ ██ ████ ███████ █████ ███████████ ███ ██ ███████ ██ ███████ ███ ███ ████ ██ ███████ ███ █████████ ████ █████ ██ █████████ ████████ ███ ████████████
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.
16.
Which one of the following ██ ████ ████████ █████████ ██ ███ ███████████ ██████
a
Consumer groups have ██ ██████████ ███████ ███ ████████ ███ ███ ██ ████
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 ████ ██ ██ ████ ███ █████ ███████████ ██ ████ ████ █████████ █████
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 █████████ ██ ███ ███ ██ ███ ██ █████ █████
This is anti-supported. The stimulus details that BST boosts milk production.
d
Milk from BST-treated ████ ███ ██ ████████ ████ ███ ██████ ████ ██ ██ ██ ████████████ ████████ ███ ████ ██████ ██ ████████████
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 █████ ██ ████████ ████ ████ ████ ███████ ████ ███ ██ ████ ██████ ██ ████████████
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.