Which of the following is a National GeoINT organization?

The National Geodetic Survey (NGS) is the correct answer as it is specifically focused on geospatial intelligence within the context of maintaining the National Spatial Reference System (NSRS) and providing geodetic data in the United States. The NGS plays a critical role in providing the foundational data standards and reference framework that underpin various geospatial activities and technologies, making it a cornerstone organization for Geospatial Intelligence (GeoINT) initiatives.

The other organizations mentioned, while significant in their respective fields, do not primarily focus on geospatial intelligence as their main mission. NASA is primarily focused on aerospace exploration and satellite data, the Federal Bureau of Investigation is centered on law enforcement and national security issues, and the Department of Energy primarily deals with energy resources and research, although it might engage in some geospatial data initiatives. However, none have the central focus on geospatial intelligence that the National Geodetic Survey does.