PrepTest 132 - Section 1 - Passage 3 - Question 17

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Passage A.

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Dental decay (a/k/a caries) · Can signal when hunter-gatherers transitioned to agriculture

This is because decay is linked to a carbohyrdate-rich diet.

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Research · Confirms connection between eating carbohydrates and dental decay

Leigh showed decay rate differed between populations that mainly ate meat and those that mainly ate maize (a carbohydrate). On average, the more agriculture, the higher the rate of decay.

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Connection not universal · Some nonagricultural populations can have high decay rate

Example: People who ate lots of stone-ground flour had high decay. Some wild plants have high decay-causing potential, too.

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Discovery of Ban Chiang remains · Show that people transitioned from hunter-gatherer to agricultural society

Connection between agriculture and dental health · More agriculture tends to result in more dental caries

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Factors that can affect caries rate · Wearing down of tooth surface can both increase and decrease caries

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Ban Chiang diet · Was diverse, but also included carbohydrates

In theory, more rice and yams in the diet should have meant more caries.

Passage Style

17.

Passage B most strongly supports █████ ███ ██ ███ █████████ ██████████ █████ █████ ███ ████ ██ █ █████

Question Type

Implied

Passage B says the following about fiber and grit: “The wearing down of tooth crown surfaces reduces caries formation by removing fissures that can trap food particles. A reduction of fiber or grit in a diet may diminish tooth wear, thus increasing caries frequency. However, severe wear that exposes a tooth's pulp cavity may also result in caries.”

They can either █████ ██ ███████ ██████ ██████████ █████████ ██ █████ ██████████ ██ ███ █████

Supported. If there’s less fiber and grit, that might diminish tooth wear, which promotes caries. That suggests that if there’s more fiber and grit, that can lead to more tooth wear, which can reduce caries formation.

78%

They are typically ████████ ██ ███████ ██████████ ██ █ ██████████ ██████ ████████████

Not supported, because Author B doesn’t discuss the relationship between more agriculture and fiber/grit consumption.

They have a ████████ ██████ ██ ███████ ██████ █████ ████ ████ ██ ███████████ ██████

Not supported, because Author B never suggests fibert/grit have no nutritional value.

They contribute to ███ █████████ ██ ████████ ██ █████ █████████

Not supported, because a reduction of fiber/grit is associated with diminished tooth wear. This suggests that more fiber/grit is associated with more tooth wear, which removes fissures.

17%

They increase the ██████████ ██ █████████████████ ██████

Not supported, because Author B never discusses the relationship between fiber/grit and stickiness. Fiber/grit and sticky foods are just two separate things mentioned that can influence caries.

PrepTest 132 - Section 1 - Passage 3 - Question 17

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