Question

which strategy best builds ethos in a speech?
using statistics from a government report
quoting a respected expert in the field
using vivid emotional language
sharing a personal story

Explanation:

Ethos is about credibility. Quoting a respected expert builds credibility as the expert's authority and knowledge in the field are recognized, enhancing the speaker's ethical appeal. Statistics can build logos (logical appeal), emotional language builds pathos (emotional appeal), and a personal - story can connect on an emotional level but not as effectively build ethos as an expert quote.

Answer:

Quoting a respected expert in the field