Answer:
d.
Explanation:
D is the only one that makes sense.
it became more prominent because the black power movement technically started the peaceful civil rights movement. Americans noticed that it wasn’t just the African Americans that needed independence, but other ethnicities (bringing peace to all)
The correct answer is predicate adjective.
A predicate adjective is the first adjective found after a linking verb (used to link, or connect two parts of a sentence). In the sentence above, the linking verb is <em>seemed </em>and the first (and the only) adjective after it is the word rapid.
There are no objects in the sentence so B and D are incorrect, and given that rapid is an adjective rather than a noun, A is also incorrect.
beat journalism ( hope it helps )