|Question 21Verbal

Source Texts

Text
When the Greengate shopping mall, an indoor, temperature-controlled complex in Greensburg, Pennsylvania, was completed in 1965, the mall was just emerging as a new shopping concept. By the mid-1980s, American "mall culture" was at its peak, with hundreds of malls acting as _____ commercial, and cultural hubs throughout the US.
Which choice completes the text so that it conforms to the conventions of Standard English?
social and
A
social;
B
social
C
social,
D