Read each sentence to find out whether there is any grammatical or idiomatic error in it. The error, if any, will be in one part of the sentence. The number of that part is the answer. If there is ‘No error’, the answer is ‘e’. (Ignore errors of punctuation, if any).
The woman who’s (A)/ car broke down (B)/ on the highway called (C)/ for roadside assistance (D).

Correct option is A

The error is in part (A). Here, relative pronoun ‘whose’ should be used in the place of contracted form of ‘who is’. "Whose" is a pronoun used to indicate possession or ownership.
"Who's" is a contraction of "who is" or "who has." It is used as a shortened form in a sentence.