Question

what muscle is primarily involved in knee extension from the following choices? quadriceps gastrocnemius tibialis anterior hamstring

Explanation:

The quadriceps muscle group, located on the front of the thigh, is the primary muscle responsible for extending the knee joint. The gastrocnemius acts on ankle plantar flexion, tibialis anterior on ankle dorsiflexion, and hamstrings on knee flexion.

Answer:

Quadriceps