While doing work A. Smooth muscles contract and pull the ligament to move the bones

B. Smooth muscles contract and pull the tendons to move the bones

C. Skeletal muscles contract and pull the ligament to move the bones

D. Skeletal muscles contract and pull the tendon to move the bones

Skeletal muscles are voluntary muscles i.e. they work according to our will. While doing work and running, we move our hands and legs, skeletal muscles contract and they pull the tendon, connecting muscles to bones, to move the bones and they do not pull the ligament as that will cause a sprain or stretch. Smooth muscles are involuntary i.e. not under our control so they are not involved in moving organs as that require control.