Which of the below is NOT one of the three factors determining how an influencer can impact behavior?

Influencer impact is usually evaluated by how well the person fits the audience, how many people they can reach, and how strongly their content drives response. In Amazon Ads terminology, influencer marketing works best when the creator’s audience, message, and engagement quality align with the campaign objective. Reach alone is not enough because the audience must also find the message relevant and credible. Resonance matters because behavior changes are more likely when content creates meaningful engagement.