The reason why it's often easier to start a fitness program than to maintain one would be because the motivation at the start of a program is often much higher than later on whne the progress made might be less obvious. For that reason A would be the correct answer.
It is often easier to start a fitness program than it is to maintain one as the motivation at the start of a program is often higher than later on when the progress made might be less obvious. When you start any type of physical activity your motivation is much higher as is your dedication and enthusiasm as you are wanting to get fitter and healthier. As time goes on you can become less motivated and enthusiastic as you might not be seeing the progress you had hope for or you might be losing interest in the particular program you are doing.
