Breast milk's immune benefits over formula

Steps:

• Identify the question's focus: advantages of breastfeeding for the baby.
• Evaluate each option for uniqueness to breast milk.
• Recall biological facts: breast milk transfers maternal antibodies, unlike formula.
• Confirm B as the key immunological advantage.

Why B is correct:

• Breast milk contains maternal antibodies (e.g., IgA) that provide passive immunity, protecting newborns from infections before their immune system matures.

Why the others are wrong:

• A: Commercial formulas are fortified with all necessary vitamins, matching breast milk's nutritional profile.
• C: Sterile bottled formula or properly prepared formula is also germ-free.
• D: Bottle feeding allows precise measurement of volume to match the baby's needs, just like breastfeeding on demand.

Final answer: B