The correct answer is C. meddle in every affair.
The idiom “to have a finger in every pie” means to be involved in many different things, often without being asked or needed. It can be used in a positive or negative way, depending on the context. In this case, it is being used in a negative way to describe someone who is always trying to control or interfere in other people’s affairs.
Option A is incorrect because it does not match the meaning of the idiom. The idiom does not mean to do things with your own hands, but to be involved in many different things.
Option B is incorrect because it does not match the meaning of the idiom. The idiom does not mean to help everyone in need, but to be involved in many different things.
Option D is incorrect because it does not match the meaning of the idiom. The idiom does not mean to dominate everybody else, but to be involved in many different things.