Which agency regulates radio and television stations in the United States?

The Federal Communications Commission (FCC) is the agency that regulates radio and television stations in the United States. This federal authority plays a crucial role in managing the country's communication infrastructure, ensuring that broadcasters comply with regulations and standards that promote fair competition and protect the interests of the public. The FCC oversees licensing, signal interference, and content regulations, fostering an environment where multiple voices can be heard while maintaining the integrity of broadcasting services.

Other agencies mentioned, like the National Broadcasting Corporation, are private companies rather than regulatory bodies, and they focus on broadcasting content rather than overseeing the regulations of broadcasts. The Communications and Media Agency and Telecommunications Authority are not formal names for recognized U.S. agencies that handle these regulations, making them irrelevant in the context of U.S. communications regulation. Thus, the Federal Communications Commission stands out as the correct choice for regulating radio and television in the United States.