Answer:
NASA
Step-by-step explanation:
An executive agency is a governmental organization or department that operates under the authority of the executive branch of a government.NASA (National Aeronautics and Space Administration) is an executive agency of the US federal government. It is responsible for the nation's civilian space program and conducts research, exploration, and technological development in the field of aerospace. As an executive agency, NASA operates under the authority of the President of the United States and is tasked with carrying out specific functions and missions related to space exploration and scientific research.