PLEASE HELP ME ASAP I NEED TO GET THIS DONE!!!!

Claudia wants to measure her body composition. How will she MOST accurately complete this measurement?

A. She will compare her height to her waist circumference.
B. She will compare the fat mass to a non-fat mass in her body.
C. She will compare her weight to the weight of people her same age.
D. She will compare the amount of weight she lifts to her own body weight.