The Large-Scale Study of the Effects of Child Care That

The large-scale study of the effects of child care that was funded by the National Institute of Child Health and Development has best demonstrated which of the following statements about the effects of child care on security of attachment in infancy?

A) The quality of child care was a critical predictor of attachment security.
B) The amount of child care was a critical predictor of attachment security.
C) The number of child-care arrangements was a critical predictor of attachment security.
D) All characteristics were critical predictors of attachment security.
E) These characteristics were substantially predictive of insecure attachments only when mothers were unresponsive or low in sensitivity.