Which of the following systems of government allows citizens to hold only one form of political opinion? A. a parliamentary republic B. a single-party government C. a presidential republic D. a constitutiona I monarchy Please select the best answer from the choices provided A B C D

The best answer is B. a single-party government.<br /><br />In a single-party government, only one political party is allowed to hold power and citizens are not permitted to hold or express political opinions that are in opposition to the ruling party. This type of government restricts political pluralism and limits the freedom of citizens to choose and support different political parties or ideologies.