Explanation:

Fourth option is correct.

• Spy agency of Britain pertaining to network and communication is known as National Geospatial-Intelligence Agency (NGA).
• The National Geospatial-Intelligence Agency (NGA) is both a combat support agency, under the United States Department of Defense, and an intelligence agency of the United States Intelligence Community, with the primary mission of collecting, analyzing, and distributing geospatial intelligence (GEOINT) in support of national security. NGA was known as the National Imagery and Mapping Agency (NIMA) until 2003.