Question

what is a coup detat?
○ a rejection of the ideas of a government
○ a sudden overthrow of an existing government
○ a civil war between groups within a country
○ a war against a country that used to be an ally

Explanation:

A coup d'état (also spelled coup) is defined as a sudden, violent, or illegal seizure of power from a government, typically by a small group (like military officers). The first option refers to dissent of ideas, not a coup. A civil war (third option) involves prolonged conflict between internal groups, not a sudden government overthrow. The fourth option describes a war with a former ally, unrelated to overthrowing one's own government. So the correct choice is the one about a sudden government overthrow.

Answer:

B. a sudden overthrow of an existing government