Final answer:
The stage of creative thinking described in the scenario is Incubation.
Step-by-step explanation:
The stage of creative thinking described in the given scenario is Incubation. Incubation is the stage where a problem solver sets aside a problem and allows the subconscious mind to work on it. During this stage, the mind continues to process information and generate insights, even though the individual may not be actively thinking about the problem.