Which is true regarding networks?

a) local area networks are web-based.
b) local area networks can be used to connect computers all the way across the country.
c) wide area networks allow users to share files with a secure connection.
d) wide area networks do not provide secure connections.

Local Are Network (LAN) is a network that connect computer (or other network devices) in a limited area (local area).
Wide Area Network (WAN) on the other hand is a network that connects computers on a a large geographical area. According these definitions, the following statement is true:
C) wide are network allow users to share files with a secure connection

This should be easy and google it