This diagram shows the structure of the bone and muscle in a human arm. -muscle
tendon
bone
How does the structure of the muscle help the arm move?
O A. The long muscle fibers transmit signals to the bones to make them move.
B. The parallel muscle fibers contract and pull the bones to produce movement.
C. The large surface areas of the muscle fibers absorb oxygen to help them move.
O D. The tube-shaped muscle fibers transport oxygen and food needed to move the bones.