Final answer:
According to Maslow's hierarchy of needs, addressing the physiological needs first and then working up the hierarchy would be the best approach to satisfying the needs of the nurse, other staff, and patients.
Step-by-step explanation:
According to Maslow's hierarchy of needs, the best approach to satisfying the needs of the nurse, other staff, and patients would be to address their physiological needs first and then work up the hierarchy. In this case, the nurse's need to care for his wife who is undergoing breast cancer treatment would fall under the safety and belonging needs. The unit manager should work with the nurse to find a solution that allows him to fulfill his caregiving responsibilities while ensuring that patient care is not compromised.