Which body system produces movement by contracting and relaxing

Muscular system

Explanation:

The muscular system is made up of different cells that is referred to as muscle fibers, which their function is based on contraction and relaxation. The movement in our body is possible as result of contraction because their is an attachment of the muscle to the body internal organs. This movement as result of contraction aid the body joint stabilit( this as a result of extension of tendons over the body joints), posture(responsible fort us to stand and sit).

The skeletal muscles in our body are in active service to make sure thebody is held in stationary positions.they provide the free movement that allows the body to run and walk, in addition they provide subtle eye movement and even facial expressions.

the answer would be 3

it is a learned trait

explanation: