What is a hypothesis regarding why breast-fed infants tend to score higher than bottle-fed infants on measures of cognitive functioning?

Question

Quizplus · Accepted Answer

Breast milk contains nutrients such as DHA and choline that promote early brain development. These nutrients are less abundant in formula.

Answer: D 
 Breast-feeding requires the mother to be physically close and engaged with the infant, which may promote social and cognitive development. However, this explanation does not account for the nutritional benefits of breast milk.

Option A is incorrect because multiple studies have found that breast-fed infants tend to score higher on cognitive measures than bottle-fed infants. Option B is incorrect because there is no evidence to suggest that mothers who breast-feed are generally more intelligent than those who do not.

What Is a Hypothesis Regarding Why Breast-Fed Infants Tend to Score