I think it’s B
Because I did this question
Gwendolyn Brooks was the first Afro-American to win the Pulitzer Prize.
Wait what’s the story about ?
The relative clause for the statement is “defining relative clause”
<em>Explanation:
</em>
A relative clause primarily has a subject along with a verb, but would not stand alone as a complete sentence, hence would have an adjective to be able to give more information about the sentence.
A defining relative clause is one which is well defined as it provides answer to questions such as “which, where, how”.
Hence the above statement is a “defining relative clause”.
