A modem is connected to a:

Correct option is C

The correct answer is (c) phone line

Explanation:

• A modem is connected to a telephone line or cable TV line, or other internet service provider (ISP)
• A modem's purpose is to translate data from the ISP into a format that can be used by the home network devices.
• A modem can be connected to a computer, broadband network, or wireless router.