**Core Concept:** Major nutrients are essential components of human milk that provide nourishment to the growing infant. Hind milk is the latter part of a breastfeed, generally considered more nutritious than the initial milk (foremilk).

**Why the Correct Answer is Right:** Hind milk is more nutritious due to the accumulation of fat droplets and proteins from the mother's diet consumed hours prior. As the infant empties the breast during feeding, the milk transition from foremilk to hindmilk. Foremilk is rich in lactoferrin, IgA, and other proteins, while hindmilk contains a higher fat content due to lipolysis (a process of breaking down fat globules).

**Why Each Wrong Option is Incorrect:**

A. Fatty Acids: While fatty acids are present in human milk, the focus here is on the overall composition of hindmilk, not specific fatty acids.

B. Lactose: Lactose is a primary carbohydrate in human milk, but the question is about the overall composition of hindmilk, not lactose content.

C. Lactoferrin: Lactoferrin is a protein present in both foremilk and hindmilk, but the question is about the overall composition of hindmilk, not lactoferrin specifically.

D. Immunoglobulins: Immunoglobulins, particularly IgA, are present in both foremilk and hindmilk but the question is about the overall composition of hindmilk, not immunoglobulins.

**Clinical Pearl:** Breastfeeding mothers should aim to empty both the breasts during each feeding session to ensure their infants receive a balance of nutrients present in both foremilk and hindmilk. This helps improve the infant's nutritional intake and supports overall growth and development.