The principle of rhetoric is mainly to persuade and impress and the style can be grandiloquent, grandiose, flowery or extravagant for example. It can be helpful to say introduce a speaker who has a very good education, who is very knowledgeable, very experienced, has excellent judgement and yet is modest for example and the above words could be used to praise him or her to give the audience a good impression of the person.
Explanation:I chose C because I feel like people might believe something more with that data and proof because technically that is what this world is honestly based on if you have proof of something anyone will believe.