PT111.S1.Q19 > Question

SECTION 1 · lr

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SECTION 2 · rc

PASSAGE 1

Question 1 Question 2 Question 3 Question 4 Question 5 Question 6

PASSAGE 2

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PASSAGE 3

Question 15 Question 16 Question 17 Question 18 Question 19 Question 20

PASSAGE 4

Question 21 Question 22 Question 23 Question 24 Question 25 Question 26

SECTION 3 · lr

SECTION 4 · lr

The stimulus says that eating Lathyrus sativus (L.S.) can cause domestic animals to develop a severe disorder called lathyrism. However, researchers have failed to use rats to study lathyrism. This is because rats that ate L.S. didn’t develop lathyrism symptoms.

These conclusions are strongly supported:

Not all animals that eat L.S. will develop lathyrism.

Rats are less vulnerable to lathyrism than at least some other animals.

This is not supported. The stimulus doesn’t offer any general facts about the physiology of rats versus domestic animals. We don’t even know why rats don’t develop lathyrism, let alone if it’s due to a “radical” difference in physiology.

This is not supported. Nothing in the facts suggests how much L.S. is needed to cause lathyrism in domestic animals, how much the affected domestic animals actually eat, nor how much was given to the rats.

This is strongly supported. The stimulus says that rats don’t develop lathyrism from eating L.S., even though lathyrism is widespread in some domestic animal species. This lets us infer that different species of animals have different susceptibility to lathyrism.

This is not supported. The stimulus mentions that lathyrism occurs in some domestic animals, but doesn’t indicate whether or not it can occur in non-domestic animals. Because we don’t know anything about non-domestic animals, we can’t compare.

This is not supported. The facts strongly imply that the problem with these lathyrism studies is that rats don’t develop lathyrism; nothing suggests that the laboratory conditions themselves are to blame. We don’t even know for sure if the studies happen in a laboratory!

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