|Question 4Verbal

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Text
Some social scientists say that while a desire for cooperation rather than conflict is key to democracy, public understanding of economics is also central to public comprehension of state politics, and if a citizenry is to function, economic issues cannot remain the domain only of experts. In short, knowledge of economics is not        and must not be left to economists alone.
Which choice completes the text with the most logical and precise word or phrase?
unattainable
A
equitable
B
commonplace
C
superfluous
D