The information which gives an insurer necessary personal data regarding an individual and helps determine whether the individual can be insured under an individual health insurance policy is contained in the:

An enrollment form is used after the application process is complete, typically to enroll an individual in a specific health plan. While it captures some personal information, it does not contain the comprehensive data needed to assess insurability, which is primarily gathered during the application stage.

The policy schedule outlines the specific terms, coverage details, and conditions of the insurance policy once it is issued. While it is important for understanding the policy itself, it does not provide the necessary personal information required to determine insurability, focusing instead on the agreement between the insurer and insured.

An agent's statement may provide insights or observations made by the insurance agent regarding the applicant, but it does not contain the specific personal data needed for underwriting. It serves as supplementary information rather than the primary source of data for determining insurability.