Question

multiple choice question
the muscle that is the prime mover for flexing the thigh and the trunk is the
gluteus medius
gluteus maximus
rectus abdominis
iliopsoas

Explanation:

The iliopsoas is the prime - mover for flexing the thigh and trunk. The gluteus medius and gluteus maximus are mainly involved in hip extension and abduction. The rectus abdominis is for trunk flexion but not a major thigh - flexing muscle.

Answer:

D. iliopsoas