The correct answer is (a) Jaws.
The masseter muscle is the strongest muscle in the human body. It is located in the lower jaw and is responsible for chewing. The masseter muscle is a powerful muscle that can generate a great deal of force. It is able to do this because it is composed of short, thick fibers that are arranged in parallel. This arrangement of fibers allows the masseter muscle to generate a great deal of force with a relatively small amount of movement.
The other options are incorrect because they are not as strong as the masseter muscle. The thigh muscles are strong, but they are not as strong as the masseter muscle. The neck muscles are also strong, but they are not as strong as the masseter muscle. The hand muscles are not as strong as the masseter muscle.
The masseter muscle is an important muscle that plays a vital role in chewing. It is a powerful muscle that can generate a great deal of force. The masseter muscle is composed of short, thick fibers that are arranged in parallel. This arrangement of fibers allows the masseter muscle to generate a great deal of force with a relatively small amount of movement.