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 health - related benefits (stronger muscles, higher respiratory fitness, lower body fat) of daily exercise for adolescents, which supports the claim. The other options are about types of exercise, negative effects of inactivity in a non - comparative way, and adolescent activity preferences, and do not directly support the claim.

Answer:

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