The continuous exposure of indoor fluorescent lights is beneficial to the health of hamsters with congenital heart disease. The average lifespan of a group of hamsters exposed to continuous exposure to fluorescent lights is 25% longer than another group of hamsters of the same species but living in the dark. The research method described above is best suited to answer which of the following questions? (). ['Does sunlight or fluorescent light affect so much the work of industrial workers?', "Can hospital light therapy prove to be beneficial for patients' recovery?", 'How can deep-sea fish species survive in the dark.', 'which is the disease of the hamster?']