Final answer:
Angela demonstrates the use of ethos by showing that she has conducted quality research and considered various perspectives, establishing her credibility. Option B is correct.
Step-by-step explanation:
An approach from Angela's proposal that demonstrates the use of ethos would be option b: She demonstrates how she conducted quality research and considered alternative perspectives. Ethos pertains to the credibility or ethical appeal of the speaker or writer, suggesting trustworthiness and authority on the subject matter. By showing that she has conducted thorough research and considered various viewpoints, Angela establishes herself as a knowledgeable and ethical authority on the issue of wetland conservation.
The other options, such as providing statistics (logos) or discussing the birds (pathos), involve logical evidence and emotional appeal, respectively, and do not directly relate to the writer's credibility or ethical appeal.