What is used as energy by most organisms?\nOptions:\n- (A) sodium\n- (B) water\n- (C) energy.\n- (D) food\n- (E) sugar\n- (F) Energy\n- (G) solutes\n- (H) light Let's solve this problem gradually.

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Glucose is used for energy by the cells of most organisms. For instance, glucose is a sugar. Sugar is used for energy by the cells of most organisms. So the final answer is (E).
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