What are two conditions under which health personnel must work eight-hour shifts, five days a week?

The correct answer highlights important criteria related to healthcare staffing requirements based on population and hospital capacity. Health personnel are required to work eight-hour shifts, five days a week when serving a community of at least one million people or when the hospital has a capacity of at least 100 beds. This is based on the rationale that a larger population necessitates more significant healthcare resources and personnel to manage the health needs effectively.

By setting the threshold at a million people or a hospital capacity of 100 beds, it ensures that the healthcare facility has enough staff to provide adequate care while also maintaining a sustainable work schedule for health personnel. This structure is essential for ensuring that hospitals can function optimally to meet patient demand.

In contrast, the other choices do not meet the established guidelines and thus specify conditions that are less likely to guarantee proper healthcare staffing levels. For instance, smaller population thresholds or lower bed capacities may not create the same demand for extensive staffing as those cited in the correct answer, potentially leading to under-resourced health services.