A. Speakers are able to support their assertions with facts.
Explanation:
In a collaborative discussion, it is important that one makes his points that are backed by some research. This is a very effective strategy that enhances the credibility of the speaker.
The party that has the most points backed by facts and figures wins because only facts can break facts, opinions cannot.
Therefore the correct answer is option <u><em>A. Speakers are able to support their assertions with facts.</em></u>
Sites like Wikipedia might contain the right answers but it is difficult to know for sure because those sites can be edited by whoever has an account for it. Because of this you never know if you're getting the facts or an opinion.
