He is always picking holes in every project. A. asking irrelevant questions on B. suggesting improvement in C. finding fault with D. creating problems in

asking irrelevant questions on
suggesting improvement in
finding fault with
creating problems in

The correct answer is C. finding fault with.

The other options are incorrect because:

  • A. asking irrelevant questions on is not the same as finding fault with. Asking irrelevant questions can be annoying, but it is not the same as finding fault with something.
  • B. suggesting improvement in is not the same as finding fault with. Suggesting improvement can be helpful, but it is not the same as finding fault with something.
  • D. creating problems in is not the same as finding fault with. Creating problems can be harmful, but it is not the same as finding fault with something.

To pick holes in something means to find fault with it. It can also mean to criticize it or to find something wrong with it.