What type of renewability guarantees both premium rates and renewability for health insurance?

The correct response is based on the definition of non-cancelable policies in the context of health insurance. A non-cancelable health insurance policy guarantees that the insurer cannot cancel the policy as long as premiums are paid on time. This means that the terms of coverage remain in effect for the insured's lifetime (or as specified in the policy), ensuring the insured can maintain their health coverage without risk of termination.

Moreover, non-cancelable policies also guarantee that the premium rates will not increase. This provides financial predictability for the policyholder, who can budget their healthcare expenses without worrying about sudden spikes in premium prices due to age or health status.

This contrasts with other types of policies. For example, cancellable policies can be terminated by the insurer under certain conditions and can have fluctuating premiums. Guaranteed renewable policies assure that coverage will continue and premiums can increase, but the increase can happen based on many factors. Convertible policies allow changing the policy from one type to another, but do not specifically offer guarantees on renewal terms or premium rates in the same comprehensive manner as non-cancelable policies do.