What are the cells that provide structural support and insulation for neurons

A)  synapses 
B)  sheaths 
C)  glia 
D)  soma

In North American society, meaningful roles for elders are more apparent in

A) White Anglo-Saxon Protestant communities.
B) wealthy communities.
C) artistic communities, particularly for writers and poets.
D) collectivist cultures, including many Native American, Asian, and African American communities.

The average number of words in a typical sentence is called "_____," which is used to measure a child's language progress.