Which of the following best describes SSDI?

The choice indicating that SSDI, or Social Security Disability Insurance, is a form of income for those with disabilities accurately captures the program's purpose and function. SSDI provides financial support to individuals who become disabled and are unable to work, ensuring they have a source of income. This program is based on the social insurance model, where workers earn benefits through their contributions to Social Security taxes during their employment. Those eligible for SSDI are individuals who have a qualifying disability and have accumulated enough work credits over their lifetime in jobs covered by Social Security.

In contrast, the other options do not accurately reflect the mission of SSDI. For instance, the option describing a program providing assistance to underemployed individuals pertains more to job training or assistance programs, which is not the focus of SSDI. Similarly, the reference to a government initiative for veterans may relate to other benefits specifically designed for military personnel, rather than SSDI. Finally, the mention of a tax incentive for companies hiring disabled workers touches on an entirely different aspect of disability policy, relating to workplace accommodations and incentives, rather than the direct income support SSDI offers to disabled individuals.