John can do some things to ensure that his audience understands the facts and figures in his speech, such as providing examples about a person affected by gun violence that represents a typical situation.
A speech has generally defined as a talk in front of an audience. The purpose is to convey information to the audience, whether about something they don't already know, to persuade, or to raise awareness about a topic.
When one wants to convey the importance of a topic to the audience, one may bring statistics in their speech. Then, to ensure that the audience understands the statistics, one can use an example case that's typical and relatable.
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