A political system in which there is only one legalized political party is called a ________?

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.