Arteries generally carry blood full of\nOptions:\n- (A) He\n- (B) Au\n- (C) O3\n- (D) O2\n- (E) DDT\n- (F) Ni\n- (G) CO2\n- (H) gas Let's solve this problem gradually.

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Arteries generally carry oxygen-rich blood. About O2, every living thing requires oxygen in order to live. Arteries generally carry blood full of O2. So the final answer is (D).
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