Addie told Callum her top 10 favorite movies. When he tries to recall the list later on, he can only remember the last two movies Addie mentioned. The fact that Callum only remembers the last two movies is most likely due to:

The recency effect    

Explanation:

In psychology, the recency effect refers to the tendency to remember the information that is more recently presented to us. In other words, if we are given a list of items we are more likely to remember the last items from the list.

In this example, Addie told Callum her top 10 favorite movies, however, when he tries to recall the list, he only remembers the last 2 movies she mentioned. In other words, he is remembering the last items of the list. Thus, this is most likely due to the recency effect.

the answer is a wheel