Adult sponges are\nOptions:\n- (A) warm\n- (B) immobile\n- (C) food\n- (D) parasites\n- (E) strong\n- (F) white\n- (G) fertile\n- (H) warm-blooded Think carefully first, then make a decision. My thoughts:
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Adult sponges are sessile. Sessile Attached permanently, immobile. Adult sponges are attached permanently, immobile. So the answer is (B).
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