Question at position 4 Informative speakers do NOT increase their credibility by:Citing credible sourcesOrganizing information clearlyInvolving celebrity endorsements Covering points with appropriate detailSharing what motivated them to select their topic

Question

Question at position 4 Informative speakers do NOT increase their credibility by:Citing credible sourcesOrganizing information clearlyInvolving celebrity endorsements Covering points with appropriate detailSharing what motivated them to select their topic

BlackTom AI · Accepted Answer

Credibility in informative speaking rests on ethos: perceived competence (knowledge), trustworthiness (honesty), and goodwill (audience-centered intent). Actions that demonstrate these traits raise a speaker’s credibility.

1) Relevant knowledge points and concepts
- Citing credible sources: shows research and allows verification (supports competence and trustworthiness).
- Organizing information clearly: demonstrates mastery of material and respects the audience’s time (competence and goodwill).
- Covering points with appropriate detail: balances depth and clarity so audience can understand and trust the content (competence).
- Sharing motivation for the topic: reveals personal connection and transparency, which builds trust and goodwill.
- Celebrity endorsements: typically used in marketing and rely on a celebrity’s popularity, not necessarily expertise; they can be irrelevant or even undermine credibility if the celebrity lacks subject-matter authority.

2) Step-by-step reasoning
Step 1 — Determine what increases ethos: actions that provide evidence, clarity, relevance, and honesty.
Step 2 — Match each option to those actions:
- Citing credible sources = direct evidence, increases trust.
- Organizing clearly = demonstrates control/knowledge.
- Appropriate detail = shows understanding and avoids oversimplification.
- Sharing motivation = shows transparency and audience orientation.
- Involving celebrity endorsements = substitutes popularity for expertise; does not supply subject-relevant evidence.

3) Intermediate logical steps
- Credibility requires relevance and expertise. Celebrity endorsement is relevant only if the celebrity has recognized expertise; otherwise it is an appeal to authority or an emotional/celebrity appeal, not substantive support.
- Informative speaking aims to inform, not persuade by association; therefore, celebrity presence is not a reliable credibility enhancer.

4) Why the correct answer is correct
Involving celebrity endorsements does NOT inherently increase an informative speaker’s credibility because popularity ≠ expertise and may be seen as a marketing tactic or irrelevant to the topic.

5) Why other options are incorrect (brief)
Each of the other options directly builds ethos: citing sources, clear organization, appropriate detail, and sharing motivation all provide evidence of competence and trustworthiness.

6) Conclusion
Therefore, the correct choice is “Involving celebrity endorsements,” which matches the provided answer.

Question at position 4 Informative speakers do NOT increase their credibility by:Citing credible sourcesOrganizing information clearlyInvolving celebrity endorsements Covering points with appropriate detailSharing what motivated them to select their topic单项选择题

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