Use reasoning to answer the following question. What are killer whales?\nOptions:\n- (A) red and black\n- (B) They have thick fur\n- (C) dangerous\n- (D) sharks\n- (E) deep sea creatures\n- (F) marine species\n- (G) Absorb light\n- (H) animals
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Marine species live mainly in shallow coastal waters. Killer whales prefer shallow and colder coastal waters. Killer whales are a marine species.
So, the answer is (F).
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