Question

which is the most effective piece of evidence to support the claim that adolescents who exercise daily are healthier than those who are inactive? adolescents who exercise daily have stronger muscles, higher levels of respiratory fitness, and lower levels of body fat. there are three categories of exercise that adolescents should partake in: aerobic, muscle - strengthening, and bone - strengthening. spending too much time on the couch watching television can have negative consequences for adolescents. adolescents enjoy different types of activities, such as dance, martial arts, or team sports.

Explanation:

The claim is about the health - benefits of daily exercise for adolescents compared to inactivity. The first option directly lists physical health benefits (stronger muscles, higher respiratory fitness, lower body fat) of daily exercise for adolescents, which directly supports the claim. The other options are about types of exercise, negative effects of inactivity in a non - comparative way, and adolescent activity preferences, not directly supporting the comparison claim.

Answer:

A. Adolescents who exercise daily have stronger muscles, higher levels of respiratory fitness, and lower levels of body fat.