A doctor who is receiving Disability Income benefits is not able to return to work full-time but continues practicing on a part-time basis. Which of the following policy features would allow the doctor to continue receiving benefits?

A Contingent Benefit clause typically provides benefits under specific conditions or events but does not directly support those who return to work part-time. This clause is not designed to cater to individuals transitioning back into the workforce while still needing disability support.

A Concurrent Benefit clause allows for the receipt of benefits from multiple policies simultaneously but does not address the situation where an individual is partially returning to work. This feature does not provide any financial support for part-time work scenarios for those receiving disability income.

A Guaranteed Insurability rider allows policyholders to purchase additional coverage without undergoing medical underwriting, but it does not relate to the continuation of benefits while working part-time. This rider is more focused on future insurability rather than providing support during a partial return to work.