Numerous studies have confirmed that a brisk walk 30 minutes each day is adequate exercise for most healthy adults. Two of the most beneficial aspects are increased metabolism and joint flexibility. Equally important, however, are the mental benefits. A daily walk provides a chance to decompress from the stresses of the work day. A change of scenery and fresh air can brighten your mood.
Which of the following sentences would be the best topic sentence for the paragraph?
a) If you want to get in shape, the first step is to get moving
b) There are physical and psychological reasons for a daily walk
c) Exercise does not have to be difficult; consider walking
d) One of the easiest ways to lose inches is to take a walk on a daily basis
e) Explain to me which one is answer and why