Concept:Achievement motivation is the drive to overcome challenges and excel. It is a person's persistent effort to succeed at difficult tasks.
Explanation:David McClelland proposed the theory of achievement motivation.
He identified three main motives: need for achievement, need for affiliation, and need for power.
People with high achievement motivation aim for success, prefer moderately difficult tasks, and keep trying despite obstacles.
They do not focus on avoiding failure or accepting outcomes equally.
Thus, achievement motivation is best described as the tendency to persist at challenging tasks.
Answer:Option A: the tendency to persist at challenging tasks