## **Core Concept**
The question tests knowledge of nutrition, specifically fatty acids present in breast milk that are crucial for infant growth and development. Breast milk contains various fatty acids, but one particular fatty acid stands out for its role in infant development.

## **Why the Correct Answer is Right**
The correct answer, **DHA (Docosahexaenoic acid)**, is an omega-3 fatty acid that is highly concentrated in the brain and retina. DHA is crucial for brain and eye development in infants. It supports cognitive development, memory, and visual acuity. Breast milk is a natural source of DHA, making it essential for infants who rely on it for growth and development.

## **Why Each Wrong Option is Incorrect**
- **Option A:** While palmitic acid is a common fatty acid in many types of fat, it is not specifically highlighted for its essential role in infant brain and eye development like DHA.
- **Option B:** Linoleic acid is an omega-6 fatty acid important for various bodily functions but does not specifically support infant brain and eye development to the extent that DHA does.
- **Option C:** Arachidonic acid (ARA) is another fatty acid found in breast milk and is important for infant growth, particularly for brain and eye development. However, DHA is more specifically emphasized for these roles.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that **DHA supplementation is often recommended for pregnant and breastfeeding women** to ensure adequate levels for fetal and infant brain and eye development. This highlights the importance of DHA in early life stages.

## **Correct Answer:** . DHA (Docosahexaenoic acid)