Correct Answer: A

Rationale: Preschoolers may engage in magical thinking and believe inanimate objects are alive, so the nurse should explain the equipment in a way that reduces fear.

Correct Answer: C

Rationale: A satisfactory radial pulse can typically be taken starting at around 3 years of age, as younger children often have pulses that are too fast and irregular for accurate measurement.

Correct Answer: C

Rationale: The correct answer is C: "I will administer this medication with meals and snacks." Pancreatic enzymes should be administered with meals and snacks to aid in the digestion of nutrients in children with cystic fibrosis. Choices A, B, and D are incorrect because administering the medication without meals and snacks may not provide the necessary support for digestion needed in cystic fibrosis.

Correct Answer: A

Rationale: Introducing oneself is the first step in establishing a rapport and setting a professional tone for the interaction.

Correct Answer: A

Rationale: In Freud's psychosexual development theory, the oral stage is the first stage and occurs during infancy. It focuses on activities involving the mouth, such as sucking and feeding. This stage is crucial for the child's development as it forms the basis for trust and attachment. Choices B, C, and D are incorrect as latency refers to the stage during middle childhood where sexual impulses are suppressed, genitality refers to the final stage focusing on mature sexual relationships, and anality refers to the stage occurring during the toddler years where toilet training plays a significant role.