Answer:
B
Explanation:
Using a Z pattern is an example of a tactic that can be very effective in keeping the audience involved in the speech. Focusing too much on any one person can make that uncomfortable and also distract the speaker.
Scanning the room in a Z type pattern gives every member of the audience the illusion of being looked at and addressed individually by the speaker. This is useful tactic because people who feel involved will pay more attention to the subject matter.
His janitor because all of them suck :)
the answer is none of above took me a good time to find this question out
Explanation:
presentation is to present something about given topic or it is the explanation of topic in front of people