Someone please answer this

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

Facial expressions and gestures are examples of messages.

Based on the current economic situation do you expect the employment demand for graduating engineers to increase or decrease? explain the basis for your answer. with a significant economic recovery, what do you think will happen to future enrollments in graduating engineering programs?