Carson enjoys writing mystery novels, and has even managed to publish some of his work. when he’s writing, carson becomes extremely focused on his work; in fact, he becomes so absorbed that that he often loses track of time, often staying up well past 3 a. m. carson’s experience best illustrates the concept of
happiness set point
adaptation
positive affect
flow

flow

Explanation:

"Flow" is a term used to refer to the act or effect of flowing, moving continuously. This word also refers to the succession of events, a great deal of facts, ideas or actions. The situations that can exemplify the concept of flow are the constant flow of fluids in a conduit, the continuous traffic of cars or people on a street, the circulation of materials, etc. In Carson's case the flow of ideas for his mystery stories and the flow of written words make him lose track of time and continue writing until dawn.

answer; i believe that the correct answer is (d); // supercontinent