Based on Data Collected During Longitudinal Studies, How Do the Intellectual

Based on data collected during longitudinal studies, how do the intellectual abilities of low-birth-weight children compare to their average-birth-weight peers at 6 years of age?

A) They show no intellectual deficits, regardless of their home environment.
B) They show multiple intellectual deficits, regardless of their home environment.
C) They show intellectual deficits if they were raised in a low-SES home.
D) They show intellectual deficits if they were raised by a single parent.