Answer: Observational learning.
Explanation:
Observational learning is the social learning that is perceived through observing the behavior of other people around us.Behavior is noticed carefully, perceived in mind and then similar action or behavior is imitated by observer.
According to the question, kitten is involved in observational learning as she observed older cat press the lever harder to receive more food, she also imitated the same action for more food.
The interesting this about the people oft he Ancient Indus Valley is that the people seem to have just disappeared, and historians and archeologists cannot figure out what happened.
