Correct Option
The correct option is (c) 2 and 3 only.
Explanation
Adolescence is a phase of rapid physical growth and development, requiring a diet that meets increased energy and nutrient demands. A balanced diet ensures the intake of all essential macronutrients and micronutrients in appropriate proportions to support this physiological transition.
Statement-wise Analysis
- Statement 1 is Incorrect. A balanced diet does not consist exclusively of proteins and vitamins. It must include carbohydrates and fats (for energy), proteins (for growth and repair), vitamins and minerals (for metabolic regulation), as well as adequate water and dietary fiber. Excluding energy-giving foods like carbohydrates renders the diet unbalanced.
- Statement 2 is Correct. Iron is a critical mineral for adolescents because it is a key component of hemoglobin, the pigment in red blood cells responsible for transporting oxygen. Adequate iron intake is necessary to support the expanding blood volume during growth and to prevent anemia.
- Statement 3 is Correct. Chips, packed snacks, and other processed foods are typically energy-dense (high in calories from fats and sugars) but nutrient-poor (lacking essential vitamins, minerals, and fiber). Therefore, they cannot replace regular meals which provide the comprehensive nutrition required for health.
Key Takeaway: A balanced diet requires a mix of carbohydrates, fats, proteins, minerals, and vitamins. Iron is specifically essential for blood formation (hemoglobin), while junk food provides empty calories without nutritional value.