Which behavioral skills training component functions as the behavioral aspect of a three-term contingency?

Which of the following examples about intrinsic motivation is correct?

a. You are working hard on a task because you know it will lead to a high grade. b. You are working hard on a task because you think it is interesting. c. You keep working on a task, even when you think it is boring. d. You decide not to work hard on a competition with a cash prize, because you know that other people need the money more than you do.

Like seven percent of American high school students, Erik is:

A) taking a vocational curriculum. B) in a private school. C) being home schooled. D) taking a general curriculum.