Which of the following is NOT a requirement to qualify for Social Security disability benefits?

To qualify for Social Security disability benefits, it is necessary for an individual to demonstrate an inability to engage in any substantial gainful activity due to a medical condition. This means that the focus is on the overall ability to work rather than the specific occupation a person is trained for.

Option C states that one must be unable to work in the occupation trained for; however, the Social Security Administration evaluates disability in a broader context. The determination hinges on the individual's capacity to perform any type of work, not just the one for which they have training. Therefore, an individual may be considered disabled even if they could potentially perform different types of jobs that they were not specifically trained for.

In contrast, the other requirements are essential components of the eligibility criteria: the inability to work in any occupation, meeting a work history requirement, and having a medically determinable condition expected to last at least 12 months are all crucial to qualify for benefits under this program.