The Longitudinal Study Conducted by the National Institute of Child

The longitudinal study conducted by the National Institute of Child Health and Human Development concluded that

A) income alone predicts whether children will become securely attached.
B) a child in child care,regardless of the quality,will be more socially incompetent.
C) the home environment is twice as important a predictor of whether children will become attached to their caregivers.
D) high-quality child care increases cognitive ability.