Final answer:
The muscle that is NOT part of the hamstring group is 'c) Triceps femoris.' This is not a real muscle in the human body; instead, 'triceps brachii' is the muscle in the upper arm that extends the forearm. The correct answer is c. triceps femoris.
Step-by-step explanation:
The hamstring muscles are a group of three muscles located in the posterior compartment of the thigh. These muscles are responsible for flexing the knee and extending the thigh. The muscles included in the hamstring group are the biceps femoris, semitendinosus, and semimembranosus.
Therefore, the answer to the question, 'Which one of the following is NOT one of the Hamstring muscles?' is c) Triceps femoris. This muscle name does not exist within the group of hamstring muscles or in the human body as 'triceps' is associated with a muscle in the upper arm known as the triceps brachii, which is responsible for extending the forearm. The correct answer is c. triceps femoris.