Suppose you are planning to take a class from a professor about whom you know nothing. Just before class starts, a friend of yours describes the professor as inflexible, wordy, an easy grader, and kind to students. If the primacy effect is operating, you are most likely to think of the professor as:

Inflexible

Explanation:

Primacy effect: In psychology, the term primacy effect is defined as an individual's tendency to recall the information that has been presented or represented at the starting or a particular list in a better way than the information that has been presented at the end or middle of the list. The primacy effect is considered as a cognitive bias which is being related to the propensity of rehearsing and is connected to memory storage systems.

In the question above, you are most likely to think of professor as inflexible due to the primacy effect that grasps information at the beginning in a better way.