Final answer:
Kesha must provide factual evidence supporting her ethics complaint against Marco and file it with the appropriate authority; personal opinions should be avoided.
Step-by-step explanation:
When Kesha is filing an ethics complaint against Marco, she should be sure to provide factual evidence supporting her complaint. This involves presenting clear, objective facts or documentation that can substantiate her claims. It is crucial for the integrity and efficacy of the complaint process that she avoids including personal opinions, which could undermine the professionalism and seriousness of her complaint. Instead, she should compile any relevant information such as emails, records, or witness statements that can demonstrate why her complaint is valid. Filing the complaint with the appropriate authority, such as the relevant ethics committee or oversight board, is also important rather than with just any real estate agency, which may not have jurisdiction over the issue. Additionally, it is crucial to avoid mentioning any witnesses or individuals who may be involved in the case.