Andrea wants to improve her flexibility through some exercise and according to the given options weightlifting is the kind of exercise which will be least beneficial for this purpose because weightlifting helps in building muscles strong, burn calories ,shaping the body but u cant achieve flexibility by weightlifting while other exercises like yoga pilates and stretching help in flexibility.
If Andrea wants to improve her flexibility. The least beneficial would probably be D. weightlifting because that would only help strengthen her muscles and not help her flexibility. Hope this helps :)
