Which is considered one part of the government?

The correct answer is Congress because it is a formal institution within the federal government of the United States, specifically part of the legislative branch. Congress is responsible for making laws and consists of two houses: the Senate and the House of Representatives. This body plays a critical role in the governance of the country, representing the interests of the citizens and checking the powers of the executive and judicial branches.

In contrast, community centers, public libraries, and private organizations do not serve as formal parts of government. Community centers and public libraries are typically operated by local governments or non-profit entities to serve the community but are not legislative or governing bodies in themselves. Private organizations operate independently and are not part of the government structure, as they typically are created for specific purposes that may or may not align with public policy or government functions.