Use reasoning to answer the following question. Which of these diseases cannot reproduce by itself?\nOptions:\n- (A) fever\n- (B) Leptospirosis\n- (C) animals\n- (D) influenza\n- (E) bacteria\n- (F) heat or cold\n- (G) dangerous\n- (H) anemia
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Viruses cannot reproduce by themselves. Influenza is a disease caused by viruses. Influenza is a disease that cannot reproduce by itself.
So, the answer is (D).
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