Answer:
Explanation:
Based on the provided description of the muscle, the answer is:
A. Gastrocnemius
Here's why:
Attaches to the calcaneus via the calcaneal tendon: The Achilles tendon, which is the thickest tendon in the body, connects the calf muscles (including the gastrocnemius) to the heel bone (calcaneus).
Plantar flexes the foot when the knee is extended: The gastrocnemius is the main muscle responsible for plantar flexion, which means pulling the toes and foot downwards. This movement occurs even with a straight knee, as the gastrocnemius crosses both the ankle and knee joints.
Therefore, considering all the clues, the gastrocnemius is the most accurate answer.
I hope this helps!
