What Weight Change Are Middle-Aged and Older Adults Likely to Experience

What weight change are middle-aged and older adults likely to experience?

A) They are more likely to gain weight easily as they age because of changes in their basal metabolic rate (BMR) .
B) They are less likely to gain weight easily as they age because of changes in their basal metabolic rate (BMR) .
C) They are as likely to gain or lose weight as they were when they were younger.
D) They will lose weight if they increase their level of physical activity to an already increased basal metabolic rate (BMR) .