Answer:
By offering evidence from people who use sunglasses while very active
Explanation:
Persuasion is an act of convincing the audience or people about own's point of view. It is almost like bringing other's on the same page as you are. It is a device that is extensively used in speeches to persuade the audience to agree with the speaker's point of view. There are mainly three types of persuasive technique: ethos, pathos, and logos.
In the given case, to persuade the audience, the speaker will use the logos persuasive technique.
Logos is an appeal to logic or reason. To persuade an audience in this technique, the speaker uses statistics, facts, or reasoning.
In the given case, the speaker should provide evidences from the people who has used the sunglasses to persuade the audience. It is persuading the audience based on facts and evidences.
So, the correct option is the last one.
