Body composition is best described as a. the amount of lean muscle in a body b. the total amount of muscle in a body c. the total mass of fat in the abdomen d. the ratio of fat to other tissue in a body

D. the ratio of fat to other tissue in a body

Body composition can be defined as the proportion of the fat and the fat free components present in the body. Our body is composed of fats, bones, water and muscles. A healthy body exhibit lower amount of body fat and a higher amount of fat free mass, which may include bones, organs and muscles. Body composed is measured to determine the health and fitness level of the body.

Hence, on the basis of above description, the ratio of fat to other tissue in a body is the correct option.

the abdomen (less formally called the belly, stomach, tummy or midriff) constitutes the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. the region occupied by the abdomen is termed the abdominal cavity. the stomach secretes acid and enzymes that digest food. ridges of muscle tissue called rugae line the stomach. the stomach muscles contract periodically, churning food to enhance digestion. the pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.