Basing this off of the problem choices of the following: A) means-end analysis - dividing a problem into smaller, more manageable tasks B) using subgoals - discovering a problem's solution in a sudden moment of clarity C) trial and error - solving a problem by making a series of attempts and eliminating unsuccessful ones D) insight - progressively reducing the discrepancy between a problem's current state and the goal state The answer would be (C) trial and error. The reason this is the correct answer is that it is a correct statement of fact. When working on solving a problem if someone is using trial and error, they will test out different theories before coming to the correct answer.