It would be letter a, since an interrogative sentence is question. Since the first answer is the only one with a question mark, the answer is a.
<span>The author simply wants to tell us that flowers, especially
the wild ones will always be mysterious. This is due to the fact that they
exhibit a unique way of evolving and constant thriving in order to survive
amidst adversity.</span>
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D. He provides comfort for Timothy when Timothy comes down with malaria.