问题详情

It is possible to find out if a person has adapted to the changes of routine by measuring his body temperature because ________.
A) body temperature changes when the cycle of sleep and wakefulness alternates
B) body temperature changes when he changes to night shift or back
C) the temperature reverses when the routine is changed
D) people have higher temperatures when they are working efficiently请帮忙给出正确答案和分析，谢谢！