Calcium in human milk in mg/dl –

**Core Concept**
The question pertains to the nutritional content of human milk, specifically focusing on **calcium** levels. Human milk is tailored to meet the nutritional needs of infants, including the provision of essential minerals like calcium for bone development. The concentration of calcium in human milk is crucial for infant growth.

**Why the Correct Answer is Right**
Human milk contains approximately 30 mg/dl of calcium, which is readily bioavailable for infant absorption. This concentration supports the rapid bone growth and development that occurs during infancy. The **calcium** in human milk is also balanced with **phosphorus** to facilitate optimal bone mineralization.

**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because it suggests a lower concentration of calcium than what is actually present in human milk.
**Option B:** Incorrect as it is not the correct value for calcium concentration in human milk.
**Option D:** Incorrect because it represents a higher concentration than the actual value.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that the calcium content in human milk remains relatively constant despite variations in maternal diet, underscoring the body's efficient regulation to ensure consistent nutrient delivery to the infant.

**Correct Answer:** C. 30 mg/dl