Official Explanation KaplanRead the Original Sentence Carefully, Looking for Errors:The primary issues here are the proper usage of "like" or "as" to make the comparison, and parallel structure. "Like" is used to indicate similarities between items, and "as" is used in comparisons that show equality. "Like" compares two nouns, and "as" compares actions or verbs. In this case, the intent of the sentence is to show the similarities between the body forms (nouns) of the mako shark and the tuna. Look for the choice that compares body forms using "like."
Scan and Group the Answer Choices:Choices (A), (B), and (C) begin with "like." Choices (D) and (E) start with "as."
Eliminate Answer Choices:Eliminate (D) and (E) because they use "as" rather than "like." Choices (A) and (B) each contain a logical problem in the comparison: they compare "mako shark" to "body form." Answer Choice (C) properly compares the "mako shark’s (body form)" with the "tuna’s body form" using the appropriate comparison word “like.”
TAKEAWAY: In comparisons, "like" is preferred when comparing nouns and "as" is preferred when comparing verbs.