Question

lea wants to maintain strong bones as she ages. which bone - strengthening activity should she incorporate into her current plan?
running
biking
horse back riding
yoga

Explanation:

Weight - bearing exercises help strengthen bones. Running is a weight - bearing activity where the body has to support its own weight against gravity, stimulating bone growth. Biking, horseback riding, and yoga are less effective for bone - strengthening compared to running as they don't subject the bones to as much stress.

Answer:

running