• Statement (A): Proteins are macromolecules formed from amino acids linked by peptide bonds.
• Statement (B): Essential amino acids, which the human body cannot produce, must be sourced from the diet.
• Statement (C): The Mid Day Meal Programme primarily serves school-aged children, not beggars or street vendors.
• Statement (D): The Integrated Child Development Services (ICDS) scheme provides nutritional support to children aged 0-6 years, pregnant women, and lactating mothers.
Thus, the accurate combination comprises (A), (B), and (D).