the body composition is the ratio of body fat to the muscles
"The answer is 77 years."
I would go with C if she eats out of the bag as a snack between meals then it won't really help!
"A"
The answer option "A" is the only legitimate answer backed by solid proof. it does not make ridiculous statements or proves a ridiculous point like the others. There is no way the other answer options have such causes and effects, and are highly contraindication, and i would always highly recommend getting knowing your family history as genes play a lot in healthcare.