feels like the only thing you're doing is giving us your homework to do what you should be doing
The adjective is cool, it modifies holes, and it answers what kind of holes.
Hope that helps
A. Helping verb, it describes the subject as it renames.
Answer:
I would think its 4, All of the above.
Explanation:
I believe this because while it is a yes/no question it also is a very vague question. There are so many other details that the research question should add.
If this is wrong, I deeply apoligize but I think All of the above would be our best bet.