Opinions that support claims presented by a speaker are referred to as which of the following?

The correct choice is testimonial evidence. This type of evidence consists of personal opinions, interpretations, and assertions that provide support to a speaker's claims. Testimonial evidence typically comes from credible sources or individuals who have firsthand experience or knowledge about the topic being discussed.

When a speaker includes testimonials in their presentation, they leverage the experiences and perspectives of others to bolster their argument, making the claims more relatable and credible to the audience. This not only enriches the content but also engages the audience by connecting on a personal level, which can enhance persuasion.

In contrast, the other types of evidence mentioned do not specifically consist of personal opinions that support claims. Persuasive evidence generally pertains to data and information aimed at convincing the audience. Statistical segments refer to numerical data that help provide context and support for a claim but not necessarily personal opinions. Specific instances involve examples or cases that illustrate a point. While all these elements can enhance a speech, testimonial evidence directly aligns with the notion of supporting a claim through individual opinions or experiences.