Answer:
b. reward.
Step-by-step explanation:
Reward power in the context of a relationship refers to the ability of an individual to give reward for compliance of another. This power is also used by the power wielder to influence the behavior of another person. There is more probability that the person is going to do the job expected from him in the lure of reward. In the question above, Adal's parents promise to reward him in kind of tuition fee and expect from him to join the school of their choice.