When rick learned that many students had received a failing grade on the midterm exam, he was no longer disappointed by his c grade. his experience best illustrates the importance

His experience best illustrates the importance of context effects.

Explanation:

Context effects are a part of cognitive psychology which accentuate the importance of one's context and how this influences an individual's perception of a certain stimulus.

In this case, Rick's perception of his C grade was influenced by his context; once he learnt many students received a failing grade he was no longer disappointed by it.

d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer

can you explain it better