Correct Answer: D

Rationale: The function of epidemiology includes evaluating the effectiveness of interventions, programs, or policies implemented to improve public health outcomes. In this context, epidemiology aids in assessing the impact and success of strategies like the Integrated Management of Childhood Illness in community health practice.

Correct Answer: C

Rationale: When planning a home visit, it is crucial for the visit to be tailored to the specific needs of the family. While guidelines are important, they should not restrict the flexibility and practicality of the plan. The plan should adapt to the family's unique circumstances, resources available, and the nurse's assessment, rather than being rigidly bound by preset guidelines.

Correct Answer: C

Rationale: In the context of a patient in labor developing a complication, it is essential to refer them to a Municipal Health Officer. While a public health nurse and rural health midwife can provide care during normal childbirth, a physician, such as the Municipal Health Officer, should attend to a woman with a complication during labor. Therefore, the correct choice is the Municipal Health Officer as they are trained to handle complications that may arise during childbirth.

Correct Answer: A

Rationale: The primary purpose of conducting an epidemiologic investigation is to delineate the etiology of the epidemic, which involves identifying the cause or origin of the disease outbreak. This process helps in understanding how the disease spreads, its risk factors, and developing strategies for control and prevention.

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.