Researchers Have Tried to Study the Moment of Illumination in the Laboratory.The

Researchers have tried to study the moment of illumination in the laboratory.The evidence indicates that

A) this experience cannot be observed reliably in laboratory conditions.
B) there is no systematic relationship between reports of illumination and actual progress in problem solving.
C) when participants report an illumination,they are at least as likely to be moving toward a dead end as they are to be moving toward the problem's solution.
D) when participants report an illumination,they have,in fact,made a discovery that will allow them to solve the problem.