PT143.S4.Q4 > Question

SECTION 1 · lr

Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7 Question 8 Question 9 Question 10 Question 11 Question 12 Question 13 Question 14 Question 15 Question 16 Question 17 Question 18 Question 19 Question 20 Question 21 Question 22 Question 23 Question 24 Question 25

SECTION 2 · rc

PASSAGE 1

Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7

PASSAGE 2

Question 8 Question 9 Question 10 Question 11 Question 12 Question 13 Question 14

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 Question 27

SECTION 3 · lr

SECTION 4 · lr

The author hypothesizes that air pollution most likely eradicated the plant diseases black spot and tar spot. This is based on the observation that those two diseases disappeared in industrial English cities during the Industrial Revolution—places where there was high air pollution.

The author assumes that the observed correlation between air pollution in English cities and the disappearance of the two plant diseases is due to the former causing the latter. This means that the author also assumes there was no alternative cause of the diseases’ disappearance.

Like (C), this is irrelevant because we don’t care about plants’ reaction to pollution, only two specific plant diseases.

This is too vague to be useful, because it doesn’t tell us why these diseases are difficult to eliminate or what might succeed in eliminating them.

Like (A), this is irrelevant because the author’s hypothesis is about plant diseases, not plants themselves. How plants are affected by air pollution is totally outside the argument’s domain.

This strengthens the author’s argument by reinforcing the relationship between air pollution and the two plant diseases. If the diseases come back when pollution decreases, that backs up the hypothesis of a causal relationship.

This is irrelevant, because we’re only concerned with these two diseases, and this tell us nothing new about them. We simply don’t care about what happened to other plant diseases.

PrepTest 143 - Section 4 - Question 4

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