Final answer:
Agent Angela's proper course of action is to explain the consequences to Samoan and reveal that she has an obligation to disclose.
Step-by-step explanation:
Agent Angela's proper course of action is option c) Explain the consequences to Samoan and reveal that she has an obligation to disclose. As a real estate agent, Angela has a legal and ethical responsibility to disclose any known defects or issues with a property to potential buyers. Failing to disclose the problem with the furnace could lead to legal consequences for Angela and harm the reputation of the real estate industry.