Which of the following health insurance provisions requires that the application becomes part of the policy?

The entire contract clause requires that the insurance policy and the application form a single, consolidated agreement. This clause stipulates that the insurer cannot deny a claim or alter the terms of the policy based on information outside of what is included in the application. By integrating the application into the policy, this provision ensures that all statements made and information provided by the applicant are legally recognized as part of the insurance contract.

The inclusion of the application in the policy promotes transparency and protects policyholders, as it limits the insurer's ability to rely on external documentation or information that was not part of the original agreement. This is essential for maintaining the integrity of the contract and upholding the trust between the insurer and the insured.

Other options mentioned relate to different aspects of a health insurance policy. The incontestable clause pertains to the period during which an insurer can challenge the validity of a policy, the renewability clause involves the conditions under which a policy can be renewed, and the grace period clause allows policyholders additional time to pay premiums without losing coverage. While important, these provisions do not address the integration of the application into the policy as a fundamental aspect of the contractual agreement.