this case, the clearest choice is (A). Choice (B) is passive and contains unnecessary
commas. Choice (C) contains the awkward phrase main among which is its. Choice (D)
uses curious as an adjective instead of a noun, implying that the weaponry is curious about
something instead of being a curiosity itself.
D This sentence does not refer to the bats (bats cannot shout). Eliminate (A) and (B). The
sentence uses the word you later, so this underlined portion should be consistent with the
rest of the sentence. Eliminate (C). Choice (D) correctly replaces they with you.
D All four choices use similar words. Choose the one that expresses the idea most clearly and
concisely. In this case, the answer is (D). Instincts does not need to be repeated because
the word innate was already used.
B Notice the question! The question asks for a phrase that emphasizes a common
misunderstanding about bats’ vision. Choice (A) compares bats’ vision to shrimp, which is
not a common misunderstanding. Choices (C) and (D) describe aspects of bats’ hunting but
do not emphasize a common misunderstanding. Only (B) discusses the common thought (or
cliché) about bats being blind.
C The pronoun its is ambiguous, as it is unclear whether it refers to the tiger moth or the bat.
The correct choice features words that are as precise as possible, so eliminate (A). The
other choices clear up the ambiguity, but only (C) has the correct possessive singular
pronoun needed. Choice (B) uses a plural pronoun, but since only a single system of
echolocation is referred to, the singular bat’s is appropriate.
B The words inedible and toxic specifically explain why the warning would result in the bats
not going after the moths. This is best summarized in (B). Choice (A) is incorrect because
we do not know about any predators, just bats. Choice (C) is incorrect because inedible
and toxic do not give any information about the mechanism of the clicks. Choice (D) is
incorrect because the information is not stated elsewhere. The answer is (B).
C The pronoun refers to the tiger moth, which is the name of a species and therefore a
collective noun. Collective nouns are singular, so eliminate (A) because it is inconsistent.
When dealing with pronouns, remember that possessives do not use apostrophes, while
contractions do use apostrophes. Choice (B) contains a contraction. It would not make
sense to say the tiger moth and it is sonar jamming, so eliminate (B). There is no such
word as its’, so eliminate (D). The sonar jamming belongs to the tiger moth, so a
possessive pronoun is needed, as in (C).
A All of the commas are correct as written. There should be a comma after each item in a list.
A comma is needed after counterattack, but not after and or adapt. Choices (B), (C), and
(D) contain unnecessary commas, so the answer is (A).
A Check the answer choices against the figures. Only (A) can be supported by the diagram.
There is no indication of other animals, as in (B); what sounds are or are not heard, as in
(D); or bats running into each other, as in (C).