Due to which tendency, do people refrain from participating in group activities because they believe other members would complete the task?

How might you use a pie graph to discuss the use of contributions for United Way?

What will be an ideal response?

According to the text, the conclusion is a speaker's last chance to

a. appear credible. b. capture the audience's attention. c. review his or her main ideas for the audience. d. introduce the subject of the speech.