Answer:
All of the above logically could be applied in this context; however, if you are to choose one, I would think your best bet is "Vary Tone and Emphasis."
Explanation:
There's a lot that goes into making a speech more enthralling for the audience, especially depending on what kind of presentation you're giving. Generally speaking, I believe the tone and emphasis are most important for all speeches, so that probably sounds like your best bet.
Five negative impacts of the social network to individual's rights to privacy and safety would be:
-Personal information has a potential danger to be stolen
-Cybercrimes can be committed
-Surveillance cameras might be hacked and may be used against an individual
-Stalking becomes rampant
-Cyberbullying can happen
