Answer:a. imitation.
Explanation:Imitation, in learning refers to coping a behavior as a way of learning. When an individual observes another person's behavior and be able to execute the same behavior, that is called imitation. It is a form of social learning which helps someone develops particular traditions and eventually catch up on the culture that is prevalent amongst that society.
As a four year old observes this behaviour , and as the learning becomes more successful she will be able to imitate the same behavior and that is part of learning through social observance
