Answer:
The correct answer would be Intrinsic Motivation.
Explanation:
Intrinsic Motivation is the behavior which is driven by the inner self of a person, i-e, by the inner reward. The urge to do some behaviors arises from within the person because he feels satisfaction in doing that.
In this example given in the question, Andre reads a page, finishes worksheets, memorizes spelling words, collects categorize and count stamps and stickers. All such things are signs of Intrinsic Motivation, because he is doing these things for his own satisfaction.
