Which One of the Following Teachers Is Most Likely to Promote

Which one of the following teachers is most likely to promote intrinsic motivation in his or her students?

A) Mr.Albertson promises his students that if they all finish their short stories by Friday morning, he will give them a half an hour of free time on Friday afternoon.
B) Ms.Petrella describes events in history so vividly that her students are captivated during the entire lesson.
C) Ms.Shaw tells students in her algebra class that she is extremely disappointed in their performance on the last test.
D) Mr.Yoo sends "good news" letters home to parents whenever students have a B average or better.