Research indicates that engage in counterfactual thinking; and that engage in meta-cognition. a. both humans and other animals, both humans and other animals b. both humans and other animals, only humans c. only humans, both humans and other animals d. only humans, only humans

Tne correct answers are in the following filled gaps:

Research indicates that only humans engage in counterfactual thinking; and that only humans engage in meta-cognition.

D. Only humans, only humans

Explanation:

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