Hey there!
This link is All About the topic sentence of a paragraph:
http://www.csun.edu/~hcpas003/topic.html
Hope it helps!
Answer:
Bandwagon (I'm not fully sure, so sorry if I get you wrong)
Explanation: In the text the author includes that "This is today's hottest technology". Making an argument or a choice based on the appeal to popular opinion is defined as bandwagoning.
The answer is: Impromptu speeches require lots of research.
When you Impromptu, it means that it was not prepared ahead of time. Usually it requires stock information. Research could not be used in impromptu speeches as it is something that is done without preparation.
