问题详情

How is "exercise" defined in the interview？
A．It is just about any amount of physical activities that will improve fitness.
B．It is just anything that you need to exert yourself to do to burn calories.
C．It means all forms of vigorous activities or deliberate workouts.
D．It includes every exercise which keeps your muscles long and supple.请帮忙给出正确答案和分析，谢谢！