The appropriate research method for the researcher observing chimpanzee behavior is observation. This method allows detailed insights into natural behaviors without interference. Unlike surveys, experiments, or interviews, observation provides direct insights into the animals' actions in their habitat.
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The research method used by the researcher observing chimpanzee behavior is known as observation. This approach allows for direct study of animal behavior in natural settings, as opposed to survey methods or experiments. Each research method has its purpose, but in this context, observation is the most appropriate. ;