Correct Answer: C

Rationale: The correct answer is C. Falling when bending over to touch toes could indicate a developmental delay or a balance issue that may need further assessment. Choices A, B, and D are typical developmental milestones for a 3-year-old child. Pedaling a tricycle without assistance, unscrewing a bolt on a toy, and building a tower of 10 cubes are all age-appropriate activities for a child of this age.

Correct Answer: C

Rationale: The most appropriate action is to assist the child back to their room for the treatment but reassure them that they may return when the procedure is completed. This approach ensures that the child receives the necessary treatment while also acknowledging their desire to continue playing in the playroom. Choice A is incorrect because it suggests moving the child to the room and asking the child-life specialist to bring toys, which may not be necessary. Choice B is incorrect as rescheduling the treatment may not be in the best interest of the child's health. Choice D is incorrect as the nurse should guide the child back to their room for the treatment.

Correct Answer: D

Rationale: The most indicative behavior of ADHD is the inability to sit still and constant movement, known as hyperactivity. This behavior is a hallmark symptom of ADHD, making option D the correct choice. Options A, B, and C do not specifically reflect the characteristic hyperactivity associated with ADHD, making them less indicative of the disorder. While option B suggests impulsivity, it is not as specific to ADHD as the hyperactivity described in option D.

Correct Answer: C

Rationale: A BMI-for-age at the 85th percentile indicates a child is at risk for being overweight, according to the National Center for Health Statistics criteria.

Correct Answer: A

Rationale: Engaging the infant in a familiar game like peek-a-boo can help reduce fear and build rapport before starting the assessment.