|Question 4Verbal

Source Texts

Text
Some social scientists say that while an emphasis on preserving civil liberties is key to democracy, public understanding of history is also central to public comprehension of state politics, and if a citizenry is to function, historical issues cannot remain the domain only of experts. In short, knowledge of history is not        and must not be left to historians alone.
Which choice completes the text with the most logical and precise word or phrase?
[Missing Choice A]
A
superfluous
B
commonplace
C
equitable
D
tangential
A