Answer: The device that is used to connect a computer to a network is an Ethernet adapter. Option B is the correct answer.
What is an Ethernet Adapter?
An Ethernet adapter, also known as a network interface card (NIC), is a hardware component that allows a computer to connect to a network. It is typically installed inside a desktop computer or attached externally to a laptop or other device. The Ethernet adapter allows the computer to communicate with other devices on the network and access resources such as files, printers, and internet connectivity.
It is clear from the provided information that Option B is indeed the correct answer.