Question

which describes a safe and efficient foot position for sprinting?
landing on the heels of the foot to absorb force and spring the knee up high
landing on the balls of the foot to absorb force and keep moving forward
landing with the foot flat for the most ground contact
landing on the toes to raise the center of gravity

Explanation:

When sprinting, landing on the balls of the foot helps in efficiently absorbing force and maintaining forward - momentum. Landing on the heels can cause jarring and potential injury, landing flat reduces speed, and landing on toes doesn't serve the purpose of efficient sprinting.

Answer:

landing on the balls of the foot to absorb force and keep moving forward