As your textbook explains, are usually the most effective supporting materials if you want to increase the emotional appeal of a persuasive speech.

The answer is "examples".

A persuasive speech is delivered to persuade the gathering of people to feel a specific manner, to make a specific move, or to help a particular view or cause and examples are the best material one can use to increase the persuasive affect as people tend to believe and like what actually happens more than mere words. Quoting specific examples of a topic can surely increase the persuasive effect manifolds.

step 1. boil eggs

step 2.eat eggs

step 3. get your hot poonts ready

changes in factors like average income and preferences can cause an entire demand curve to shift right or left. this causes a higher or lower quantity to be demanded at a given price. demand curves relate the prices and quantities demanded assuming no other factors change. it is important for consumers to know this information, because it is crucial for them to know what they can afford and can't afford. i hope this .