making a bandwagon appeal in a persuasive speech is an example of using\no substantiated opinion.\no…

Brief Explanations:

A bandwagon appeal is when someone argues that an idea is correct just because many people believe it, without providing evidence. It's an unsubstantiated opinion as it lacks solid support. It's not a substantiated opinion (which has evidence), an either - or argument (a false dichotomy), or a proven fact.

Answer:

B. unsubstantiated opinion