Final answer:
The correct answer to the question is the 'qualification period,' which refers to the time an employee must work before becoming eligible for unemployment insurance benefits.
Step-by-step explanation:
The minimum period of time an individual must be employed before becoming eligible to receive unemployment insurance under the Social Security Act of 1935 is known as the qualification period. This period serves as a way to ensure that only those individuals who have been employed for a sufficient amount of time, and have thereby contributed to the unemployment insurance fund through their employer's payments, receive benefits. The qualification period is distinct from a probationary period, which employers may use as a trial to assess the suitability of a new hire, and during which the employee may receive lower pay and can be dismissed without cause.