In the beginning of his speech, ryan asked the audience a rhetorical question. at the end of the speech, he provided an answer to the question. which method for creating effective introductions did ryan use?

Ryan used a method called Hypophora. This resource consists of asking a question, with the aims to create interest and inquisitiveness among the audience and, by the end, explaining or giving the answer to that question.  

This resource is not a rhetorical question because the narrator or speaker does provide the answer, in contrast with rhetorical figure where the answer is implicit.  

i do believe the correct answer is the spread of chinese culture throughout asia and africa.good luck

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