What suggestion presented in your textbook for using supporting materials is used in the following speech excerpt?
Since it first opened for business, McDonald's has sold more than 100 billion hamburgers. To give you an idea how many hamburgers that is, think of it this way: Since each McDonald's burger (with the bun) is about 2 inches thick, 100 billion hamburgers stacked on top of each other would reach over 3 million miles⎯fifteen times as far as the moon.
a. Explain your statistics.
b. Present testimony from qualified sources.
c. Use examples to quantify ideas.
d. Quote or paraphrase accurately.

usually, a falcon can kill an owl, and horses don't normally eat each other.

original oratory is a competitive event in the national speech and debate association, stoa usa, national catholic forensic league, and other high school forensic competitions in which competitors deliver an original speech on a subject of their choosing, though the speech must be factual.racial discrimination refers to discrimination against individuals on the basis of their race. policies of racial segregation may formalize it, but it is also often exerted without being legalized and also it means facing injustice.

main idea: it is important to prepare today for the needs of tomorrow.

the grasshopper was dying due to hunger, and this was because he didn't prepare for the winter.

the ants told the grasshopper, "if you were foolish enough to sing all the summer, you must dance supperless to bed in the winter."

the ants were spending a fine winter's day drying grain collected in the summertime.