Correct Answer: Sartorius muscle

Solution : The correct option is the Sartorius muscle.

The sartorius muscle is the longest in the human body. The sartorius muscle goes from the hip to the knee and is involved in hip joint flexion, abduction, and rotation, as well as knee joint flexion, and rotation. It is known as the "tailor's muscle" because it crosses one leg over the other when sitting in a cross-legged stance, which is similar to the posture used by tailors.