Which of the following occupations still has a legal mandatory retirement age?

The correct answer is jet pilot because, in many countries, including the United States, there are regulations that require commercial pilots to retire at a certain age, typically 65. This mandatory retirement age is based on safety considerations, as age can impact a pilot's physical and cognitive abilities required to operate an aircraft safely. Regulatory agencies such as the Federal Aviation Administration (FAA) implement these laws to ensure the safety of air travel.

In contrast, the other occupations listed do not have a federally mandated retirement age. School teachers, corporate managers, and university professors can continue working well beyond a specific age if they choose to do so, as their professions do not have the same critical safety concerns associated with aging as piloting does. Thus, while individuals in these roles may face personal or institutional pressures to retire, there are no legal requirements that enforce a mandatory retirement age as is the case for jet pilots.