A. de jure one-party system
B. de facto one-party system
C. totalitarian single-party system
D. mass party system

Correct Answer: Option A

A. de jure one-party system

Explanation

A one-party state, single-party state, one-party system, or single-party system is a type of state in which one political party has the right to form the government, usually based on the existing constitution.

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