The process of going from having work done by muscle to being done by machines is which of the following?

Their ability to exchange user-generated content is one of the main reasons "social media" became the common name for this 21st century form of communication

Indicate whether this statement is true or false.

What should a speech conclusion do?

a. It should provide new material. b. It should summarize the main ideas. c. It should stir guilt in the audience. d. It should fade out gradually.