The correct answer, which is the Rectus Femoris, is a muscle located in the front part of the thigh and is one of the four quadriceps muscles. Its primary function is to extend the knee joint, but it also plays a crucial role in the hip joint by participating in the flexion of the hip. This means that when the Rectus Femoris contracts, it helps lift the leg at the hip joint, making it essential for activities like walking, running, and kicking.
While the Biceps Femoris is a component of the hamstring muscle group that is mainly responsible for knee flexion and hip extension, it does not effectively lift the leg at the hip joint. Similarly, the Biceps Brachii and Masseter have completely different roles in the body; the Biceps Brachii is involved in elbow flexion and shoulder movements, while the Masseter is a primary muscle responsible for mastication (chewing). Thus, in the context of lifting the leg at the hip joint, the Rectus Femoris is the muscle that fulfills this function effectively.