Which of the following is listed as a function of fat?

• A. Thermal insulation
• B. Energy provision as the only source
• C. Contributes to zero body fat
• D. Inhibits vitamin absorption

Answer: (A)

Fat serves as an insulating layer under the skin, trapping air and slowing heat loss from the body. This helps keep body temperature stable in cooler conditions. While fat is a major energy store, it isn’t the only energy source—carbohydrates and proteins also provide energy, so it isn’t correct to say it’s the only source. We don’t aim for zero body fat; some fat is necessary for health, cushioning, and hormonal balance. And far from inhibiting vitamin absorption, fat actually aids the absorption of fat-soluble vitamins A, D, E, and K.