Answer:
I think its 2, but correct me if i'm wrong. :>
Explanation:
They instance, "user trial engineer" may refer to a human factors professional who specialists in user trails. Reliability works stress and training as these may relate to human-system and human-computer interaction design.
Wait. What? What does that even mean?
Answer:
D. smart phone
explanation;
a. what the heck is a radio going to do?
b. an HD television? is his job watching movies?
d. he already has a form of communication he uses, he needs something that can to both things at the same time
c. a smart phone can do everything he needs to do, likely faster than a landline phone or laptop.
