Answer: A. Expressing rage over the terrible plight of drug addicts to demonstrate her intense commitment to change
Explanation: What will certainly not increase credibility with the audience is expressing rage. While it may seem that expressing rage and anger is good for showing commitment to a problem, a desire for change, and that Amy cares about reducing the suffering of drug addicts, rage shows that there is a lack of composure with Amy, and composure is key when one wants to gain credibility, because anger can point to certain shortcomings of anyone who wants credibility at all costs.
On the other hand, showing keen interests and enthusiasm for problem solving indicates dynamism, while quoting adequate sources to confirm claims and fluent speaking are elements of competence, that is, someone who has the competence to solve a problem.
Answer:
Strong winds blow the dust from the Sahara over the ocean to the Amazon jungle
