The american people have reached a(n) that a liberal interpretation of government is most effective.
a. understanding
c. discrepancy
b. epiphany
d. consensus

The correct word-filling sentence answer is the following: The American people have reached a consensus that a liberal interpretation of government is most effective. Given that consensus means agreement, the American people mentioned in this sentence is supposed to have agreed about that government interpretation. The structure of the sentence, indeed, postulates ‘’consensus’’ as the correct choice.

Excuse me, sorry, but is this a question?