What insurance provision allows an individual to continue coverage after an employer-based plan ends?

The conversion privilege is the correct answer because it specifically refers to a provision that allows individuals to convert their group health insurance coverage into an individual policy, typically when they leave their employer or when an employer-based plan ends. This means that even after leaving a job or if the employer stops offering insurance, the individual has the right to maintain some level of health insurance coverage without having to provide evidence of insurability. This is particularly important for ensuring continuity of health care access and coverage without facing potential issues related to pre-existing conditions.

In contrast, other options do not accurately describe this specific provision. Guaranteed issue, for instance, pertains to laws that require insurers to offer coverage regardless of health status, but doesn't specifically address continuation of coverage after an employer plan ends. Portability generally refers to the ability to transfer benefits from one plan to another, but it's not synonymous with maintaining coverage after the loss of a group plan. Lastly, eligibility relates to whether someone qualifies for coverage, not the options available after an employer-based plan concludes.