Final answer:
Before transmitting the health insurance application to her home office, Maria should obtain Don's signature on the application to ensure its accuracy and fulfill legal requirements.
Step-by-step explanation:
The question pertains to the steps an insurance agent should take before transmitting a health insurance application to her home office. After completing the application, Maria, the agent, should obtain Don's signature on the application. This is a critical step as it ensures that the applicant has reviewed the information and certifies its accuracy. It is also a legal requirement for processing the insurance application. Disclosing Don's medical history to the underwriter is part of the application process, but the question specifically asks about actions Maria should take before sending the application, hence obtaining Don's signature is more relevant to the prompt. Sharing the application with other clients or sending the application without any additional steps, such as obtaining a signature, would be incorrect and potentially a breach of confidentiality or incomplete procedure respectively.