Answer :
Graham will experience top-down processing.
What is top-down processing?
In Psychology, the term top-down processing, refers to a situation in which a person moves on from general to specific perception of situations at any given time.
Since Graham has been preparing to play trombone in the marching band during a football game at a high school he hasn't been to before, he will experience top-down processing.
Learn more about psychology:https://brainly.com/question/7451362