Which organization regulates aviation safety in the United States?

The Federal Aviation Administration (FAA) is the correct choice because it is the primary agency responsible for regulating all aspects of civil aviation in the United States. This includes establishing regulations for aircraft operations, pilot certifications, aviation safety standards, and air traffic control. The FAA's wide-ranging authority allows it to oversee and enforce safety protocols to ensure the airline industry operates safely and efficiently.

The National Transportation Safety Board (NTSB) focuses on investigating transportation accidents and making recommendations to improve safety but does not regulate aviation on an ongoing basis. Air Traffic Control (ATC) is a service that manages the movement of aircraft in the skies and at airports but does not create regulations. The Transportation Security Administration (TSA) deals primarily with security regulations and procedures for the transportation sector, including screening passengers and luggage, rather than directly overseeing aviation safety regulations.