Answer:
A - accusations, exonerate.
Explanation:
Imputation is an accusation, and exculpate means to show or declare that someone is not guilty of wrong doing, which is basically the definition of exonerate.
Answer:
The phrase "whose selfishness had not hesitated to buy its own peace at the price, perhaps, of the existence of the whole human race" best supports the the that humans posses the ability to be monstrous. The phrase shows how humans are only thinking of what they want and need and not about how their voices affect the people and things around them.
Basically overthrowing a government.
Positive: Economical, Vintage, Thrifty
Neutral: Old
Negative: Cheap, Decrepit
I hope this helps! :)