Final answer:
The behavior Amanda describes is known as the rooting reflex, which, along with the sucking reflex, helps newborns find the nipple to feed and is an essential survival mechanism, not an indicator of high IQ.
Step-by-step explanation:
When Amanda's breast touches her newborn son's cheek and he begins to suck, this behavior is best explained by reflexive behavior in infants.
Understanding newborn reflexes, it's clear that this behavior:
c) Reflects the rooting reflex in newborns
Newborns display several innate reflexes that are critical for their survival. The rooting reflex assists in locating the nipple for feeding when the infant's cheek is stroked or brushed against something.
Similarly, the sucking reflex is the automatic action of sucking when something is placed in the baby's mouth. Along with these, the grasp reflex gives the baby a surprisingly strong grip. These reflexes serve the essential purpose of helping newborns feed and maintain close physical contact with their caregiver.