Which of the following is a purpose of a rider in an insurance policy?

A rider in an insurance policy serves the purpose of amending the terms of the existing policy. Riders are additional provisions that can be added to an insurance contract to modify its benefits, coverage, or exclusions. They allow policyholders to customize their insurance to better meet their specific needs, addressing situations that the standard policy may not cover.

For example, a policyholder may add a rider for accidental death benefits, which would provide additional benefits in the event of a death caused by an accident. This customization enhances the policy's utility for the insured, ensuring it aligns more closely with their personal circumstances or preferences.

The other options do not accurately reflect the primary aim of a rider. While a rider might indirectly affect premiums, its main role is not simply to increase costs but to tailor coverage. Limiting coverage options and voiding the policy contradicts the purpose of a rider, which is to provide additional benefits rather than restrict or eliminate existing ones.