What nonforfeiture option provides overage for longest period of time?

The nonforfeiture option that provides coverage for the longest period of time is typically the "extended term insurance" option. This option allows the policyholder to use the cash value of a lapsed whole life policy to purchase a term insurance policy with the same face amount, effectively extending coverage for a specified period without requiring further premium payments. The duration of this coverage depends on the cash value accumulated in the original policy.