It is the end of the month and Cindy is yet to pay several bills, but she does not have much money left. She spends most of the day thinking how she is going to make the payments. Later, while watching TV, she finds a solution to her problem. Cindy is demonstrating:

incubation                                      

Explanation:

Incubation: In psychology, the term "incubation" is described as a phenomenon that involves an individual's "unconscious recombination" of thought elements that are being stimulated through a few conscious works in a specific point of time and often results in some novel or good ideas at a later point of time. It generally arises, when an individual conscious awareness related to a particular task is being diverted and hindered.

In the question above, Cindy is demonstrating "incubation".

which of the following is a subsurface event that takes place during the rock cycle?