Answer:
The correct answer is femur.
The lateral rotators act on the femur.
Step-by-step explanation:
The lateral rotators is a group of muscles composed by the piriformis, the external obturator, the twin (superior and inferior), the femoral square and the internal obturator, which rotate the thigh outwards (they rotate the thigh laterally away from the midline of the body), that is, they act on the femur, rotating laterally the hip joint, in addition they help to keep the head of the femur inside the acetabulum.