Correct Answer: A

Rationale: To administer 2 mg of Morphine Sulfate when the concentration is 10 mg/mL, the nurse should administer 0.2 mL (2 mg / 10 mg/mL = 0.2 mL). Choice B, 0.5 mL, is incorrect because it is the result of dividing 2 mg by 4 mg/mL instead of 10 mg/mL. Choice C, 1 mL, is incorrect as it would be the result of dividing 2 mg by 2 mg/mL. Choice D, 2 mL, is incorrect as it would be the result of dividing 2 mg by 1 mg/mL.

Correct Answer: A

Rationale: Baby powder can be inhaled by the infant and cause respiratory distress. Toys should be inspected to prevent choking hazards. Allowing an infant to take a bottle to bed can increase the risk of aspiration, and hard foods like teething biscuits should be given with caution.

Correct Answer: A

Rationale: Small objects are a choking hazard for infants, so it is crucial to keep them out of reach to prevent injury.

Correct Answer: A

Rationale: Large push-pull toys are suitable for a 12-month-old as they encourage gross motor skills and physical activity, which are crucial for their development at this age.

Correct Answer: C

Rationale: Fear of strangers typically begins around 6 months as infants start recognizing familiar and unfamiliar faces, which is part of their social development.