Young Children Raised in Homes with Professional Parents May Show

Young children raised in homes with professional parents may show more language development and larger vocabularies compared to children raised at or near poverty levels. What do researchers Hart and Risley suggest is a possible explanation for these differences?

A) The researchers estimate that young children in poverty have heard 30 million fewer words in their first years of life than peers in homes with more resources.
B) The researchers found that children with more resources have richer play environments, with a greater variety of toys.
C) The researchers attribute the difference to greater exposure to environmental hazards, such as lead, that may impair language development.
D) The researchers found that children in lower-income homes had fewer siblings on average.
E) The researchers discovered that children in higher-income homes had greater access to more educational television and other media.