Correct Answer: B

Rationale: Low blood pressure in a client with Addison's disease requires immediate intervention as it can indicate an Addisonian crisis, a life-threatening condition that necessitates prompt treatment. Hyperpigmentation of the skin is a characteristic finding in Addison's disease but does not require immediate intervention. Nausea and vomiting can be managed symptomatically in Addison's disease. While hypoglycemia needs attention, it is not the most critical finding requiring immediate intervention in this context.

Correct Answer: A

Rationale: Recognizing signs of dehydration is crucial for ensuring the health and well-being of infants.

Correct Answer: A

Rationale: Assessing for suicidal ideation is critical to ensure the client's immediate safety.

Correct Answer: B

Rationale: Reverse isolation precautions protect the client from exposure to microorganisms from others.

Correct Answer: D

Rationale: Understanding the specific demographics, health needs, and challenges faced by the target population (migrant farm workers' children) is essential to designing an effective and relevant immunization program.