Answer:
C. A method of using a network to carry voice traffic
Step-by-step explanation:
VoIP is an accronym for Voice over Internet Protocol. It is also called IP telephony. It is a method and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet.
It is a method for taking analog audio signals, then turning them into digital data that can be transmitted over the Internet.