Jennifer knows that she is a girl, and by watching what other girls do in her culture, she is learning how she is expected to behave. which theory holds that gender-typing is acquired in this way?

Jennifer's behavior can be explained by social-learning theory, specifically the concept of observational learning. The concept of observational learning in social-learning theory states that children copy the actions and behaviors of people around them who are the same gender. Through these observations children of certain genders learn how they are to act in their particular culture.