Final answer:
Political parties play a primary role in motivating citizens to take action on political issues.
Step-by-step explanation:
The primary role of political parties in helping citizens engage with the U.S. government is motivating citizens to take action on political issues. Political parties play a crucial role in mobilizing and organizing citizens to participate in the political process. They encourage citizens to vote, engage in political discussions, and advocate for their preferred policies and candidates.
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