Answer:
The answer is "Social Cognitive Theory ".
Step-by-step explanation:
The social cognitive theory explains how we learn from the behavior of others. This theory states a framework of understanding the effective way of how our behavior is shaped or we shape other people's behavior by observing and imitating the way each other acts.
The theory highlights the observational learning and modeling. Just like Clara is doing, she imitates her older sister's outfit and that way she learns gender roles.