Which of the following are part of lean body mass?
I. MuscleIII. Fat.
II. Visceral organs. IV. Blood.

• A. I, II, & III.
• B. I, II, & IV.
• C. I, III, & IV.
• D. II, III, & IV.

Answer: (B)

Verified step by step guidance

1. Understand the concept of lean body mass: Lean body mass refers to the total weight of your body minus the fat mass. It includes muscles, bones, water, organs, and other non-fat tissues.
2. Analyze the options provided in the question. Identify which components are part of lean body mass. For example, muscle, visceral organs, and blood are non-fat tissues, so they are part of lean body mass. Fat, however, is not included in lean body mass as it is categorized separately as fat mass.
3. Evaluate each option systematically: For example, in option I, II, & III, check if all listed components (muscle, visceral organs, and fat) are part of lean body mass. Since fat is not part of lean body mass, this option is incorrect.
4. Continue evaluating the remaining options: For example, in option I, II, & IV, check if muscle, visceral organs, and blood are part of lean body mass. Since all these components are non-fat tissues, this option is correct.
5. Confirm the correct answer by ensuring it aligns with the definition of lean body mass and excludes fat. The correct answer is the option that includes muscle, visceral organs, and blood but excludes fat.