Your doctor tells you that you and your twin sister have the same basal metabolic rate (BMR). You live independent lives and do your own thing, so how can that be? Which factor is likely the reason?

1. your age
2. your appetites
3. your required Daily Values
4. your hunger
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The likely reason for having the same basal metabolic rate (BMR) despite living independent lives is your age (option 1). Age is a significant factor that affects BMR, as it usually decreases with age. Since you and your twin sister share the same age, it is reasonable to have similar BMR values. The other options are not directly related to BMR and are less likely to be the reason.