Final answer:
Devices connect to a network using a Network Interface Card (NIC), which is the correct answer to the student's question.
Step-by-step explanation:
Devices generally connect to a network via a port on their Network Interface Card (NIC). The correct answer to the question is d. Network interface card. A NIC is a hardware component that allows a computer or other device to connect to a network. It can be an ethernet card for wired connections or a wireless adapter for Wi-Fi. Although a networking card is not sufficient alone to secure a job, when used effectively, it is a detail that helps individuals stand out in the professional world.