Bunuel
Like some humans, some adult cats lack a sufficient quantity of the enzyme lactase to digest milk; as a result of drinking
it, such cats become sick, as evidenced by their vomiting or excreting diarrhea or gas.
A. it, such cats become sick, as evidenced by their
B. milk, such cats become sick, as evidenced by its
C. milk, such cats become sick, as evidenced by those cats’
D. it, they become sick, as evidenced by their
E. milk, such cats become sick, as evidenced by their
KAPLAN OFFICIAL EXPLANATION
(E)
Step 1: Read the Original Sentence Carefully, Looking for ErrorsThe underlined text begins with the pronoun “it,” which could refer to either “lactase” or “milk.” The pronoun is thus ambiguous. Read on for other errors or potential errors to watch for in the answer choices. The last underlined word is another pronoun, “their.” This clearly refers to “cats” and is correct.
Step 2: Scan and Group the Answer ChoicesLike (A), (D) begins with the pronoun “it.” (B), (C), and (E) begin with the noun “milk.”
Step 3: Eliminate Choices Until Only One RemainsSince (D) repeats (A)’s error by using the ambiguous pronoun “it,” eliminate both choices.
To compare (B), (C), and (E), note how their endings differ from each other: (B) says “its,” (C) says “those cats,"and (E) says “their.” Since the author’s intent is to say that cats experience various signs of illness after drinking milk, eliminate (B) for inappropriately referring to only one cat. And since the text that immediately follows the semicolon refers to “such cats” becoming sick, clearly indicating the cats without enough lactase to digest milk, the phrase “those cats” in (C) is unnecessarily repetitive. The more concise “their” in (E) can refer only to the sick cats and thus is unambiguous. Eliminate (C) and read (E) into the sentence to confirm that it is correct:
Like some humans, some adult cats lack a sufficient quantity of the enzyme lactase to digest
milk; as a result of drinking milk, such cats become sick, as evidenced by their vomiting or excreting diarrhea or gas.