Final answer:
The national communications link through FCIC involves all technologies listed: Fiber Optic Cable, Satellite Communication, and Microwave Communication, which are used to provide efficient and widespread communication services.
Step-by-step explanation:
The national communications link available through the Federal Communications Commission (FCIC) encompasses all the mentioned technologies: Fiber Optic Cable, Satellite Communication, and Microwave Communication. Fiber optic cables are heavily used in telecommunications to carry laser signals that enable long-distance and high-bandwidth communication. Satellite communications depend extensively on microwaves due to their ability to carry more data per unit of time and require a clear line of sight for effective transmission. Furthermore, microwave communication is used for both satellite-transmitted information and land-based long-distance transmissions. These communications technologies provide rapid, efficient nationwide and worldwide communication services, fulfilling the FCC's mission to make these services available to all the people of the United States.