Consider statements about human nutrition: 1. Carbohydrates provide immediate energy. 2. Proteins are body-building foods. 3. Fats are not essential for the body. Which are correct? MCQ with Answer and Explanation

Carbohydrates are the body's primary and most readily available source of energy, broken down into glucose for immediate cellular use. Proteins are essential 'body-building' foods, providing amino acids necessary for the growth, repair, and maintenance of tissues, muscles, and enzymes. Fats are essential macronutrients; they provide concentrated energy, are crucial for cell membrane structure, aid in the absorption of fat-soluble vitamins, and provide essential fatty acids. Thus, statements 1 and 2 are correct.