Answer: Intrinsic motivation
Step-by-step explanation:
The intrinsic motivation is refers to the feelings of internal satisfaction and reward that motivate the individual person naturally.
The main purpose of the intrinsic motivation is that it helps in encouraging in terms of of various types of thinks such as work hard, choosing the better options in life and also about the different opportunities.
According to the given question, the given situation best illustrating about the excessive rewards which can reduce the Libby intrinsic motivation. Therefore, Intrinsic motivation is the correct answer.