Question

a company that offers services for accessing and using the internet is:
a modem
a public wi-fi provider
an internet service provider (isp)
a network

Explanation:

• A modem is a device for modulating/demodulating signals, not a company offering internet services.
• A public Wi - Fi provider offers Wi - Fi access in public spaces but is a subset of ISP - related services and not the general term for a company providing internet access.
• An Internet Service Provider (ISP) is a company that offers services for accessing and using the internet.
• A network is a group of connected devices, not a company providing internet services.

Answer:

C. an Internet Service Provider (ISP)