Which of the Following Alternatives Illustrates Operant Conditioning

Multiple Choice

Which of the following alternatives illustrates operant conditioning

A) Your mouth waters at the sight of a display of fresh chili peppers in the supermarket.
B) You no longer use a vending machine in the foyer of the computer science building on campus because it has sometimes failed to deliver your soda.
C) You don't know how best to organize the points you wish to make in one section of a political science term paper.The solution suddenly comes to you, though, after you work on your statistics homework for a while.
D) You squirm at the sight of an addict shooting up in a television movie.