Final answer:
The purpose of presenting a false dilemma in a speech is to convince the audience that there are only limited options to consider. This manipulation simplifies complex issues into two choices and can influence hasty decisions without thorough critical analysis.
Step-by-step explanation:
The purpose of presenting a false dilemma in a speech is typically to convince the audience that there are limited options, thus simplifying the decision-making process for them. This rhetorical strategy often involves presenting two choices as the only possibilities, when in fact there may be additional, unacknowledged options. It's a form of manipulation that takes advantage of our tendency to 'think fast,' which can lead to quick, though not necessarily well-informed, decisions. The false dilemma is an informal fallacy because it relies on content that unjustifiably limits options, misleading the audience by simplifying complex issues into overly dichotomous choices.