Let's think step by step! What is one of the facets of an organism's evolution?\nOptions:\n- (A) resistance\n- (B) fitness\n- (C) properties\n- (D) thirst\n- (E) movement\n- (F) swimming\n- (G) offspring\n- (H) recycling
The thinking starts now:
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Behaviors that improve fitness increase through natural selection. Many organism behaviors have evolved through natural selection. An organism's fitness is a result of evolution. The final answer: (B).
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