Hi shobhitk,

The big "split" among the answer choices is based on a "style" rule called Active Voice. As a general rule, you should always write and speak in the active voice.

Active Voice is essentially about the "order" of the words: Subject does action, in that order....

As an example:

He taught the class. "He" is the subject", "taught the class" is the action.

Passive voice is usually incorrect (except for a few rare circumstances). Passive voice puts the action BEFORE the subject....

As an example:

The class was taught by the instructor. "Taught the class" is the action, but it comes BEFORE "the instructor" (the subject).

In this SC, answers A, B and C are written in the Active Voice, while D and E are written in the Passive Voice. Eliminate D and E.

The rest of the sentence is a comparison of how something "looks" now vs. how it "looked" in the past. For that, we need simple past tense.

Final Answer: A

GMAT assassins aren't born, they're made,
Rich