This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
In walking, gravity tends to tilt pelvis and trunk to the unsuppoed side, major factor in preventing this unwanted movement is? 
Select and explain. 
A. Adductor muscles, B. Quadriceps, C. Gluteus maximus, D. Gluteus medius and minimus
D: Gluteus medius and minimus
Answer: D: Gluteus medius and minimus 
Explanation: Gluteus medius and minimus