Which of the following federal agencies has the objective to develop and promote measurement, standards, and technology to enhance productivity, facilitate trade, and improve the quality of life?

The National Security Agency (NSA) is primarily responsible for signals intelligence and cybersecurity for national security systems, not the broad development and promotion of standards for productivity or trade.

The National Institute of Standards and Technology (NIST) is a U.S. federal agency under the Department of Commerce whose mission is precisely described as developing and promoting measurement, standards, and technology to enhance productivity, facilitate trade, and improve the quality of life. This includes a crucial role in developing cybersecurity standards and guidelines.

The United States Congress is the legislative branch of the U.S. government, responsible for making laws, not a federal agency with the described technical mission.

The Committee on National Security Systems (CNSS) is an intergovernmental committee that provides a forum for developing national policy on national security systems, not an agency focused on broad measurement and technology standards for commerce and quality of life.