What is groupthink, and how might groupthink impact the outcome of group decision-making? 

According to the text, a speaker should not introduce new material in the

conclusion of a speech. Indicate whether the statement is true or false.

Carlos has not planned word-for-word what he is going to say to the union members but will use the outline he prepared as his guide and if he gets a question from the audience, he can respond. What mode of presentation is Carlos using?

A. extemporaneous B. memorized C. manuscript D. impromptu