Most of the choices appear to be ones that you are familier with, but after taking second look, you

Most of the choices appear to be ones that you are familier with, but after taking second look, you will find that they are different. A. /; the B. the; the C. the; a D. /; a

Let’s break down the sentence:

Most of the choices appear to be ones that you are familiar with, but after taking a second look, you will find that they are different.

The original phrase in question is:

“after taking second look” — in normal English, this should be either “after taking a second look” (more common) or “after taking the second look” (less likely unless referring to a specific second look mentioned before). Since this is a general statement and “a second look” is a fixed idiomatic phrase meaning “to look again,” “a second look” is correct here.

Now the first blank:

“Most of the choices appear to be ones that you are familiar with” — no article needed before “familiar with.” If it were “the ones,” it would be specific ones already mentioned, but here it’s “ones” in a general sense (no article). The original sentence seems to have omitted something? Let’s check:

“Most of the choices appear to be ones that you are ___ familiar with” — actually, that blank doesn’t exist in the original unless it’s a misprint? Wait, the question has two blanks:

From the options given:

1st blank: “Most of the choices appear to be ones that you are ___ familier [sic] with” — there’s no blank there either? Possibly the blanks are in another part?

Actually, the question format often is:

Most of the choices appear to be ones that you are familiar with, but after taking ___ second look, you will find that they are different.

That means:

Blank before “second look” → “a second look” → “a” in second blank.
But what’s the first blank? Could it be before “ones”? As in: Most of the choices appear to be ___ ones that you are familiar with… That would require “the” or no article.

If it’s general “ones,” we use no article. If it’s specific “the ones,” we use “the.”

Given standard usage, “ones that you are familiar with” doesn’t need “the” unless specifying “the ones (that)…” but here, “Most of the choices appear to be ones…” sounds natural without “the” (meaning: they appear to be examples of the kind you know).

So:

First blank (before “ones”): no article → /
Second blank (before “second look”): “a”

That matches D. /; a

Answer: D