Which U.S. government organization regulates radio frequencies?

• A. Department of Commerce
• B. Federal Communications Commission (FCC)
• C. National Telecommunications Authority
• D. Federal Aviation Administration

Answer: (B)

Regulating radio frequencies means coordinating how the spectrum is divided and used so different services don’t interfere with each other. The Federal Communications Commission is the agency responsible for this in the United States for most civilian and commercial radio: it allocates frequency bands, licenses services like broadcasting, cellular, and Wi‑Fi, and sets technical rules (such as power limits and interference protections) and enforces those rules. The FAA focuses on aviation safety and the use of radios within airspace, but it does not regulate the spectrum itself. The Department of Commerce has a role related to spectrum policy through the NTIA for government use, but the primary regulator for civilian radio frequencies is the FCC. The National Telecommunications Authority isn’t a U.S. regulator. That’s why the FCC is the correct choice.