Answer:
This question is incomplete. Here are the missing options:
The answer is B. Context effects.
Explanation:
Context effects is a term used in psychology to describe the influence of one's environment in learning and memory. It also affects our perception of a certain stimulus. For example, people are more likely to say a coffee is good-quality if the environment of the shop is comfortable.
In the example, John has better grades on exams when on the same seat because there are environmental cues that trigger his memory links.