Final answer:
The gluteus maximus is not an internal rotator of the hip; its primary function is the extension of the hip joint, distinguishing it from the internal rotators such as adductor muscles.
Step-by-step explanation:
The correct answer to the question of which is not an internal rotator of the hip is B. Gluteus Maximus. The gluteus maximus is a large muscle that attaches the leg to the pelvic girdle and produces extension of the hip joint, therefore it is not an internal rotator. Internal rotators of the hip typically include muscles such as the adductor brevis and the adductor longus, among others which adduct and medially rotate the thigh. The gluteus medius and gluteus minimus are primarily involved in abduction and medial rotation of the femur rather than internal rotation. Consequently, for the role of internal rotation of the hip, the gluteus maximus does not fit as it is primarily an extender of the hip.
The gluteus minimus is not an internal rotator of the hip.