Final answer:
Option B is an ethical appeal because it shows understanding and fairness, establishing credibility for the residents who are speaking at the city council meeting.
Step-by-step explanation:
An ethical appeal, or ethos, shows that someone is credible and trustworthy. Option B, "To be fair, we understand you will save money if you build the landfill," is an example of an ethical appeal the residents can use at the city council meeting because it demonstrates a willingness to acknowledge the perspective of the city council, implying fairness and open-mindedness. It establishes the residents as reasonable and understanding, even while they may disagree with the decision to build a landfill, thereby potentially increasing their credibility.