Answer :
Answer:
a. Mere exposure effect.
Explanation:
The option that is most likely to account for John’s choice of cheese is the mere-exposure effect. In customers' behavior, the mere-exposure effect refers to the fact that people will most likely choose a product to which they have been previously exposed than select a product to which they have not been exposed at all. The calendar in John's kitchen made him select the cheese to which he had been exposed.