Correct Answer: A

Rationale: Sudden and severe scrotal pain in an adolescent male is a medical emergency and may indicate testicular torsion, which requires immediate evaluation and intervention to prevent testicular loss.

Correct Answer: C

Rationale: Discussing how the body continuously makes blood helps the child understand that losing a small amount is normal and not harmful. This educational approach also helps reduce anxiety by giving the child a sense of control over the situation.

Correct Answer: D

Rationale: Edema of the lips, tongue, and pharynx is a characteristic sign of corrosive poisoning, indicating damage to mucous membranes from ingestion of a caustic substance. Other symptoms may vary depending on the poison but are not as specific to corrosive ingestion.

Correct Answer: C

Rationale: The correct answer is C. By age 5, children should be able to state their name and address. If a child cannot do this, it may indicate a developmental delay that requires further assessment. Choices A, B, and D do not indicate a need for further education as they reflect typical developmental milestones for preschool-age children, such as gradually improving counting skills, asking many questions, and improving speech clarity over time.

Correct Answer: B

Rationale: If a vesicant solution infiltrates, stopping the infusion immediately and notifying the practitioner is critical to prevent tissue damage. Cold or warm compresses should only be applied following specific medical advice based on the vesicant involved.