A disability income benefit rider provides periodic income—commonly a monthly benefit—when the insured becomes disabled as defined by the rider and satisfies the applicable elimination period and other contractual requirements. Its purpose is to replace part of the income that the insured may lose because disability prevents or materially limits work.

The benefit is distinct from a waiver of premium rider. Waiver of premium keeps the life insurance policy in force by relieving the insured of the obligation to pay premiums during qualifying disability; it does not ordinarily provide spendable monthly income. Therefore, C describes a different rider.

Likewise, a guaranteed insurability rider allows the insured to purchase additional life insurance at specified times or events without new evidence of insurability, making D incorrect. A disability income rider is normally structured to provide recurring benefits rather than the single lump-sum payment described in A.

The amount and duration of benefits, definition of disability, waiting period, and maximum benefit period depend on the rider ' s specific language. The essential examination distinction is nevertheless straightforward: disability income = periodic income replacement; waiver of premium = premiums waived.

Study Guide Reference: Life Insurance Policy Provisions, Options, and Riders — disability income rider; waiver of premium; disability definitions and benefit periods.