Fact 1: Playing is one way mammals and other animals learn how to behave. Fact 2: Second stage, learn how to behave assertively. Given the two facts above, how do animals learn how to be assertive?
OPTIONS:
1). lectures from their parent.
2). instinct.
3). Movement.
4). playing.
5). being killed.
6). ligt.
7). sweating.
8). exercise.
4).