Question

how can teens demonstrate good physical fitness to their families?
by keeping their rooms tidy
by flossing their teeth every day
by saying please and thank you
by taking the stairs instead of the elevator

Explanation:

• Keeping rooms tidy is about cleanliness, not physical fitness.
• Flossing teeth is oral hygiene, not physical fitness.
• Saying please and thank you is good manners, not physical fitness.
• Taking stairs instead of elevator is a physical activity that can contribute to physical fitness.

Answer:

by taking the stairs instead of the elevator