Problem solving is:

A. talking about a problem after you have cooled down.

B. breaking down a problem to find a solution.

C. the result or outcome of something that occurred previously.

D. the process of resolving a problem or issue.

I believe the answer would be B, breaking down a problem to find a solution. Let's say in a math word problem, it's problem solving. And in those word problems you have to break down the problem piece by piece to find the solution to the word problem. Or if two people wanted the same thing like a sandwich, to solve the problem you would break down the problem, and then a solution could be to break the sandwich in half for one person to eat one slice and the other to eat the other slice.