In the First Few Months of Life, Babies Respond to All

In the first few months of life, babies respond to all adults. They don't much care who feeds them, rocks them, or picks them up. By six months, though, infants are more discriminating. They are likely to withdraw from people they do not know and to gurgle and coo only with those who are familiar to them. At this age, babies are likely to protest or withdraw when approached by an unfamiliar person, a phenomenon known as "stranger anxiety."  When, for instance, seven-month-old Jennifer first met her uncle, Ben, she shrieked loudly and refused to let him hold her. Fortunately, Ben had two children of his own and didn't take Jennifer's rebuff personally. Stranger anxiety typically peaks at about eight months.It usually disappears altogether by fifteen months.At this age, babies have generally gotten used to the idea that unfamiliar people are not necessarily to be feared. From Zick Rubin, Letitia Anne Peplau, and Peter Salovey, Psychology .p.227
Implied Main Idea

A) After the age of six months, babies just don't like strangers.
B) When babies reject strangers, the adults should not take it personally.
C) How babies react to strangers depends a good deal on their age.