What is the most common professional balanced audio cable connector?

You're planning a teleconference for several people. It's important to con¬sider:

A. The expense of setting up the teleconference B. How comfortable and competent participants are with the electronic medium C. The amount of direct interaction and nonverbal communication required for the task D. All of the above E. None of the above

In an ad featuring a child with Down syndrome, an advertiser should refer to the child as:

a. A child with Down syndrome b. A Down child c. A disabled child d. A handicapped person