I’m not exactly sure, but I’m thinking it may be A . I just learned about this unit previously .
The answer is Physical Property
About half of a body’s weight is muscle. Muscle tissue is of three distinct types: skeletal, cardiac, and smooth. Each type has a unique structure and a specific role. Skeletal muscle<span> moves bones. </span>Cardiac muscle<span> contracts the heart to pump blood. The </span>smooth muscle<span> tissue that changes shape to facilitate bodily functions of intestine and bladder. Here are more details about the structure and function of each type of muscle tissue in the human muscular system. </span>
Increases genetic variation, which in and of itself has extreme benefits such as protection against disease, capability to evolve, etc
