The answer i assume would be "A" i'm guessing because the underlined verb would be "Coaching" hope this helps.
Answer:
It was a magically sad experience. It was as if he was creating a story in his mind as he was staring at the drum.
Maybe its tryin to tell the readers about the hard times of the oldr times
A, too. Preposition is used to determine location. "He is NEXT to her" "the cat is UNDER the table"