Which nutrient is primarily required for tissue repair?

Correct option is D

Proteins are essential for tissue repair and growth. They provide amino acids which are the building blocks for muscle tissues, enzymes, hormones, and immune cells. In cases of injury, surgery, or infections, the body needs extra protein to rebuild damaged tissues. High-protein foods include milk, meat, eggs, legumes, and soy products.
Explanation of each option:
· (a) Vitamin: Vitamins are important for many body functions but they regulate metabolism; they do not directly build or repair body tissues.
· (b) Carbohydrate: Carbohydrates provide energy but are not involved in repairing body tissues. They mainly fuel daily activities.
· (c) Fat: Fats provide stored energy and help in hormone production, but are not the main component needed for tissue repair.
· (d) Protein: Correct. Proteins supply amino acids needed for making and repairing body tissues, supporting healing and recovery.