Which bony landmark can be felt and seen, and is commonly used to determine where to give an intramuscular injection on the lateral surface of the thigh?

The bony landmark that can be felt and seen, and is commonly used to help determine where to give an intramuscular injection on the lateral surface of the thigh is called the greater trochanter.
The illiac crest is found on the pelvis, the lateral epicondyle is in the arm, and the remaining options are too small to be felt and seen. So the correct answer has to be the greater trochanter found on the femur, or the thigh bone.