Studies of Infants Raised in Deprived Orphanages for the First

Studies of infants raised in deprived orphanages for the first eight or more months of their lives indicate that

A) a lack of a biological mother during the first year of life leads to significant and lasting developmental delays.
B) male infants are more at risk for a lack of early life stimulation.
C) children who are deprived of intellectual stimulation during the first six months of life often display long-term negative impact on their cognitive skills.
D) being surrounded by infant peers can make up for the lack of stimulation by adults.