Research shows that for people to be regularly and productively creative， they need to let ideas ， so as to give their unconscious mind a chance to keep working on the problem.

Research shows that for people to be regularly and productively creative， they need to let ideas ， so as to give their unconscious mind a chance to keep working on the problem.
A.personify
B.evaporate
C.incubate
D.metamorphose
正确答案：incubate