When April first started exercising, the workouts were very unpleasant, but she felt pretty good afterward. After a year of regular exercise, April can't wait to get to the gym because the workouts are not as unpleasant and she feels euphoric afterward. Which theory of motivation best explains this?

The correct answer is:

Self-actualization by Maslow's hierarchy of needs.

Explanation:

According to Abraham Maslow's motivational theory in his hierarchy of needs, the human being has a scale of priorities in life that are determined taking into account the level of his needs. Maslow talks about the stage of self-actualization, in which the human being has the opportunity to make the maximum effort in order to find his potential that leads him to personal satisfaction and growth according to the development of his physical and cognitive capacities, which becomes a chain, as is the case of April where the individual makes an effort and receives a reward; the greater the effort, the greater the reward will be.