Correct Answer: C

Rationale: A frozen teething ring is effective for relieving teething pain as the cold helps numb the gums and reduce inflammation, making it a safe and effective method for managing discomfort

Correct Answer: D

Rationale: Standard precautions are necessary when dealing with blood, body fluids, and potentially infectious materials. They are not required for routine administration of oral medications unless there is a potential exposure risk.

Correct Answer: A

Rationale: Playing peek-a-boo is an ideal play activity for a 7-month-old as it encourages visual tracking and social interaction, which are key developmental milestones at this age.

Correct Answer: B

Rationale: The primary nursing concern in this situation is the risk for aspiration. Popcorn is a choking hazard for infants, as their airway is not fully developed to handle solid foods like popcorn. Choices A, C, and D are incorrect because the main focus should be on the immediate risk of aspiration due to the inappropriate solid food given to the infant, rather than on nutritional imbalances or readiness for enhanced nutrition.

Correct Answer: A

Rationale: Varicella (chickenpox) is an airborne infectious disease, requiring isolation to prevent the spread of the virus.