Which option allows a policyowner to purchase more life insurance without proving insurability?

The option that allows a policyowner to purchase more life insurance without proving insurability is the Guaranteed Insurability Option Rider. This rider provides the policyholder with the flexibility to increase their life insurance coverage at specified intervals or life events (such as marriage or the birth of a child) without having to undergo additional medical underwriting. This is particularly advantageous for individuals who may develop health issues later on and would otherwise be unable to obtain more coverage.

By having this rider, policyholders can secure additional life insurance protection without the risk of having their application denied based on changes in health status. It provides peace of mind, knowing that they can respond to life's changes without the concern of undergoing a medical exam or having to prove they are insurable again.

The other options do not provide this specific benefit; they pertain to different aspects of insurance provisions or coverages. For instance, field underwriting relates to the initial assessment conducted by the agent, while riders like the Accidental Death Benefit and Payor Provision offer alternative forms of coverage and benefits but do not specifically facilitate the purchase of additional life insurance without requiring proof of insurability.