Jeff, who is 14, engages in rigorous tennis drills or competitive play at least four hours every day because he wants to master the sport and play on one of the best university teams in the country. his goal and behavior best illustrate the concept

Achievement motivation

Explanation:

From the given case/scenario, we can state that Jeff's behavior and goal illustrates the concept of Achievement motivation. Achievement motivation is considered as the affect in relation with the evaluated performance under which the fierce competition with the level of superiority was paramount. It is  typically referred to as the scale of an individuals motivation in order to engage in the achievement.

answer; humanistic;

answer; promote the individual as a "progressive being";