Can you please solve this before 3:10 mountain time please hurry

Wireless communications is likely to be viewed as an essential part of an enterprise network infrastructure when: select one: a. mobile communication is needed b. communication facilities must be installed at low initial cost c. communication must take place in a hostile or difficult terrain that makes wired communication difficult or impossible d. the same information must be broadcast to many locations

In the context of an internet connection, llc stands for leased line connection liability limited company local loop complex local loop carrier

Plz ( which is an example of a good url?