Because e-mails are sent and received at different times, they represent an _________________ forms of communication.  

The mental health campaign in Australia made sure to include ______ among the participants.

A. diverse age groups B. a large geographic area C. diverse cultures and ethnic backgrounds D. diverse lifestyles

The second level of communication, which can convey as much information as the verbal content of conversation, is known as ______.

Fill in the blank(s) with correct word