Question

select the correct answer.
kina is an athlete and weighs more than her sister, who is of the same height. what could be the reason?
a. kina has more muscle mass than her sister because she is more athletic.
b. as part of her athletic regimen, kina takes several supplements that add to her weight.
c. to fuel her high level of activity, kina consumes extra calories and carbohydrates.

Explanation:

Muscle is denser than fat. Athletes often have more muscle mass. Option A explains that Kina, being more athletic, has more muscle mass (which is denser and thus can make her weigh more at the same height). Option B about supplements adding weight is not a common or main reason. Option C, consuming extra calories and carbohydrates is for energy but not the main reason for weight difference in this context (as muscle - fat density difference is key).

Answer:

A. Kina has more muscle mass than her sister because she is more athletic.