The definition of disability in the Social Security program is applicable to which of the following?

The definition of disability in the Social Security program is applicable to both Supplemental Security Income (SSI) beneficiaries and Title II beneficiaries, which includes individuals who qualify for Social Security Disability Insurance (SSDI). The Social Security Administration (SSA) uses a consistent definition of disability across both programs, where an individual must demonstrate that they have a medically determinable physical or mental impairment that results in the inability to engage in substantial gainful activity (SGA).

This encompasses both categories of beneficiaries, allowing individuals who meet the criteria to receive benefits regardless of whether they are receiving SSI or SSDI. While individuals under age 18 also have specific criteria for determining disability, the definition of disability itself does not exclude anyone based on age, contrasting with the misunderstanding that might arise in other contexts. Therefore, it's clear that the disability definition applies broadly to both program types, supporting the correct choice.