What do we call a sudden realization of the solution to a problem?

The correct answer is "Insight" because it refers to the moment when a person suddenly understands the solution to a problem, often after a period of contemplation or struggling with the issue. This type of cognitive breakthrough is characterized by a feeling of clarity and understanding that seems to arise without a linear thought process. Insight typically involves a reorganization of information and a new perception of how elements of a problem interact, leading to a creative and often unexpected solution. This phenomenon is highlighted in psychological studies where individuals might suddenly "see" the answer after having previously been unable to grasp it, which vividly illustrates the concept of insight in cognitive psychology.