Use reasoning to answer the following question. Trees have woody stems covered with what?\nOptions:\n- (A) food and shelter\n- (B) smooth ridges\n- (C) looseness\n- (D) protective layer\n- (E) Organic compounds\n- (F) plastic sheet\n- (G) heat energy\n- (H) thin metal
User
Trees have woody stems covered with bark. During the stripping, the protective layer of inner bark is removed. Trees have woody stems covered with a protective layer.
So, the answer is (D).
Assistant