Its a pattern where items are arranged according to their physical position or relationships.
Steve is defensive especially now that Don has pointed out that nobody knows what he has been doing in the basement. The evidence suggests that Steve is going to get angry at Steve for accusing him of causing all of the strange goings on in the neighborhood. To Don, this anger is more evidence that Steve is up to something.
Answer:
Logical OR to be expected
Good luck hun! Hope this helps