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Which animal has been using a form of stimulus control known as targeting?

a) a dolphin that touches a stick with its snout b) A parrot that mimics human speech c) a dog that stops barking on demand d) a sea lion that waves its flipper at an audience

One difficulty in judging creative acts is that they are nearly always:

A) a matter of subjective evaluation B) occur in the privacy of one's inner life C) left to experts to evaluate D) take only seconds and hard to make valid observations E) difficult to understand by anyone other than the creator