Correct option is D
The correct answer is (d) exact.
In this sentence, "exact replica" is the correct collocation. "Exact" means precise, accurate, and completely similar.
"Replica" means a copy or reproduction of something, usually made to be as similar as possible to the original.
So, "exact replica" means a precise copy that is completely similar to the original.
The other options do not fit well in the context of the sentence. "Wild replica," "obscure replica," and "corrupt replica" do not make sense in the context.