Which of the following actions should a broker take if they detect a pronounced moldy odor in a new listing?

When a broker detects a pronounced moldy odor in a new listing, informing the client and recommending an environmental assessment is the most prudent course of action. This approach aligns with the broker's responsibility to ensure the safety and well-being of their clients, as well as uphold ethical standards in real estate practice.

Mold can indicate a serious underlying issue, such as water damage or poor ventilation, which could have health implications and affect the property's value. By informing the client, the broker is facilitating transparency and allowing the client to make an informed decision about how to address the situation. Furthermore, recommending an environmental assessment provides a professional means of evaluating the extent of the mold issue, potentially identifying necessary remediation steps.

This proactive stance not only serves the client’s best interests but also protects the broker from potential liability. A clear and professional communication about health and safety concerns establishes trust and demonstrates a commitment to ethical practice within the industry.