Use reasoning to answer the following question. Many _ can cause the immune system to not work properly.\nOptions:\n- (A) fever\n- (B) bacteria\n- (C) radiation\n- (D) fungi\n- (E) A drug.\n- (F) Allergies\n- (G) cancers\n- (H) Toxicity
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Immunodeficiency occurs when the immune system is not working properly. Many cancers can cause immunodeficiency. Many cancers can cause the immune system to not work properly.
So, the answer is (G).
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