Choose your answer from: a. otters b. bacteria c. viruses d. rocks e. lions f. animals g. humans h. Birds
Given those answer options, answer the question: Fact 1: Playing is just one of many ways that mammals and other animals learn how to behave. Fact 2: Mammals include lions, bears, dogs, horses, cattle and antelopes. Given the two facts above, what learns to behave through playing?
A:
e.