The details in this excerpt show readers
that the scene is

use the headings to create an overview of the main points.

c. to understand which information will best persuade your readers. (apex) correct answer.

from the political point of view it could be said that the candidate   is an effective speaker because she takes a strong position on the issue. it is an open discussion but probably she is making a presentation and can choose which subjects she wants to address. she is very likely to attain her aim which is to convince voters to accept her proposal.