Correct Answer: A

Rationale: The primary level of health facility is the usual point of entry for a client into the healthcare delivery system. This level typically involves initial consultations, preventive care, and basic treatment services. Clients often start their healthcare journey at the primary level before being referred to higher levels of care if needed.

Correct Answer: A

Rationale: During the investigation of an epidemic, establishing the epidemic involves comparing the current frequency of the disease with the typical frequency for that time of year in the community. This comparison helps determine whether an epidemic is occurring by assessing if the number of cases exceeds the expected baseline, as well as establishing the link between the cases of the disease.

Correct Answer: D

Rationale: Tertiary prevention focuses on actions taken to prevent complications and further deterioration among individuals already diagnosed with a disease. It is implemented during the terminal stage of a disease when efforts are made to prevent disability, restore function, and improve quality of life. This stage is crucial for managing the disease's progression and enhancing the patient's well-being.

Correct Answer: B

Rationale: Conducting random classroom inspections during a measles epidemic is a vital function of the school nurse as it involves assessing pupils and teachers for signs of a health problem prevalent in the community. This function helps in early detection, prevention, and control of diseases among students and staff, contributing to maintaining a healthy school environment.

Correct Answer: B

Rationale: In the context of family nursing, when a family member like the youngest child is diagnosed with mental retardation, it represents a health deficit. A health deficit occurs when a family member fails to develop as expected, as in the case of mental retardation. This classification helps nurses identify and address the specific health needs of the family.