Question

what technology is used to transmit data in fiber optic cables?
electrical signals
radio waves
light
sound waves

Explanation:

Fiber - optic cables work by using the principle of total internal reflection. Light signals (usually in the form of infrared light) are used. Electrical signals are used in copper - based cables. Radio waves are used in wireless communication like Wi - Fi. Sound waves are not used for data transmission in fiber - optic cables as they are slow and not suitable for high - speed data transfer over long distances.

Answer:

C. Light