After struggling with a complex math problem, Stacey takes a short break. While making herself a cup of tea, she suddenly comes up with a solution. "Aha!" moments such as this are a form of learning that occurs in the apparent absence of reinforcement.

Insight.

Explanation:

German-American psychologist Wolfgang Köhler was credited to first proposed the theory of insight learning. It refers to a form of learning that happens suddenly by recognizing the relationships between different parts of a problem, rather than by trial and error. In other words the sudden realization of the problem instead of stimulus-response association or trial and error method.

answer; for children with two myopic parents,the likelihood of becoming myopic is ) correlated with the number of hours spent playing sports each week;