While watching the video, the most relevant information to consider would be:
The speaker's tone and use of evidence to support his claim.
This option focuses on the credibility and effectiveness of the speaker's argument. Analyzing the tone can help you gauge whether the speaker is passionate, knowledgeable, or biased, while examining the evidence they provide can determine if their claims are well-supported and factual. The other options relate less directly to the substance of the argument being presented.