In an Experiment by Ancel Keys,36 Male Volunteers Cut Their

In an experiment by Ancel Keys,36 male volunteers cut their food intake in half for a period of 6 months.In response to this semistarvation,the volunteers

A) did not stabilize their weight even though they were taking in half their previous calories.
B) stabilized at 25 percent of their normal weight,while taking in half their previous calories.
C) reduced their energy expenditure,and their body weights stabilized at about 25 percent below their starting weights.
D) increased their energy expenditure and their basal metabolic rate.