Final answer:
Luis effectively motivates listeners to want information by suggesting the speech's content could be life-saving, capturing the audience's attention and interest.
Step-by-step explanation:
Luis is effectively motivating listeners to want information. By framing his speech with the potential for high personal relevance (saving a loved one's life), he sets the stage to compel the audience into wanting to receive and understand the forthcoming information. This technique not only hooks the audience's attention but also indicates a personal investment and establishes the significance of the information he's about to share.