Answer:
Body composition
Explanation:
"Body composition" is <em>one of the most reliable indicators of a person's health</em>. It shows the<u> ratio of fat in relation to the body's lean tissue.</u> The <em>"lean tissue"</em> refers to <em>"non-fat mass,"</em> such as<em> bones, organs </em>and<em> muscles.</em> It is ideal for a person to have a lower fat percentage in order to be considered healthy.
Having fat in the body is fine because a person's body need it to function properly. However, storing excess fat can be dangerous because<u> it is not metabolically active.</u>
I believe the answer is A
By components do you mean organs? If so...
1. Brain - gives demands ands orders to all of the body to function properly
2. Heart - pumps blood, and keeps the organism receiving the blood alive
3. Skin - protects the tissue from UV Rays that may be harmful
