What type of transmission medium uses glass fibers to transmit data?

Fibre Optic is the correct answer because it refers specifically to the technology that uses glass fibers to transmit data as light signals. This method allows for very high data transmission rates over long distances with minimal signal loss, making it an ideal choice for modern communication networks. Glass fibers have a core that reflects light inward, creating a pathway for the data to travel. This transmission medium is capable of carrying more data at higher speeds compared to other options.

Wireless transmission does not utilize any physical medium but instead relies on radio waves or other electromagnetic signals. Coaxial cables consist of a central conductor and insulating layers, typically used for cable television and internet services, not fiber optics. Twisted pair cables, commonly used for telephone and network connections, are made of copper wires twisted together, lacking the speed and distance advantages provided by glass fibers. Thus, the use of glass fibers in fibre optics distinctly sets it apart as the most effective medium for high-speed data transmission.