How can teens model good physical fitness to other teens in their neighborhood? by reading books at the library by baking cookies for the elderly by riding their bikes to school by growing vegetables in their own gardens

The answer is By riding their bikes to school.

Hope this Helps!

By riding their bikes to school.

Explanation:

The teens that live in a society can be a role model for the children living in the society by riding their bikes to the school.

Seeing this exposure to the environment and riding bikes or bicycles to the school will help them develop physical fitness.

It is a very good respiratory exercise which helps in improving the stamina of the teens. They mostly tend to spend time on mobile phones and computers which is not good.

i say that the answer is 'd'