Final answer:
Two-component models of body composition measure the proportion of fat-free mass and fat mass in a person's body.
Step-by-step explanation:
Two-component models of body composition measure whether or not a person has two major components: fat-free mass and fat mass. These models are based on the idea that the human body can be divided into two parts, with one part representing the fat-free mass, which includes bones, muscles, and organs, and the other part representing the fat mass.
One example of a two-component model is the skin-fold test, in which a caliper is used to measure the thickness of skin at different parts of the body. This measurement is then used to estimate the amount of fat mass in the body.
So, the statement is True: two-component models of body composition measure the proportion of fat-free mass and fat mass in a person's body.