What percentage of mature milk is composed of water?

• A. 50%
• B. 70%
• C. 90%
• D. 100%

Answer: (C)

Mature breast milk is primarily composed of water, with approximately 87% being water. This high water content is crucial for infants, as it helps to keep them adequately hydrated, especially since breast milk is often the only source of nutrition for young babies in their early months. The composition of mature milk supports the infant's needs by providing not just hydration but also essential nutrients, fats, and proteins necessary for growth and development.

The other options reflect lower percentages of water, which do not accurately represent the actual composition of mature milk. Understanding this composition is important for those involved in maternal and child health, as it highlights the significance of breastfeeding in providing both the hydration and nutrition that infants require.