Final answer:
One way that does not make a persuasive message effective is exaggerating the positive impact.
Step-by-step explanation:
The ways to make a persuasive message effective include providing rewards such as food or drink, exaggerating the positive impact, repeating the message, and getting the audience's attention. However, one way that does not make a persuasive message effective is exaggerating the positive impact. It is important to be honest and credible in your message rather than exaggerating the benefits.