Answer:
Positive
Explanation:
If you sound positive people around you will understand your speech better and think you take it seriously, but if you sound negative, then they won't take you seriously and will not understand the point you are trying to make.
But thats just my opinion.
Answer:
A personal story featured on an individual's blog
Explanation:
Option A would be considered credible, since it is tied to a university. Option C is also credible because it is an in-depth study that is promoted on a publicly-funded page. Option D is credible because the Wall Street Journal is recognized as a reliable news source. Since Option C is written by a private individual with no professional connections that may support their claims, they would be least credible.