Collin is conducting a study about chimpanzee communication methods. Which of the following note excerpts from his recent trip to the zoo would be good to include in his study?

A study of chimpanzee communication should include observations that may show how one chimpanzee responds to another. The female walking away when the male approaches is an observable response to another chimpanzee’s behavior, so choice C is relevant. Sleeping, playing, or choosing one food over another does not directly provide evidence about communication methods.

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