Correct Answer: A

Rationale: The primary reason for correcting cryptorchidism through surgery is to prevent damage to the undescended testicle, which can lead to infertility and increase the risk of testicular cancer. Prevention of UTIs and prostate cancer are not the primary concerns in this context.

Correct Answer: A

Rationale: Hirschsprung disease is characterized by the absence of ganglion cells in a segment of the colon, leading to a lack of peristalsis and obstruction. The other options do not accurately describe this condition.

Correct Answer: B

Rationale: The Denver II Developmental Screening Test is used to assess a child's development in four areas: personal-social, fine motor-adaptive, language, and gross motor skills. It helps identify children who may need further evaluation. Choice A, behavior problems, is incorrect as the Denver II primarily focuses on developmental milestones rather than behavior. Choice C, body mass index, is unrelated to the assessment of child development. Choice D, infection likelihood, is also not evaluated by the Denver II test.

Correct Answer: D

Rationale: The correct answer is D, regression. Regression occurs when a child reverts to an earlier behavior, such as having accidents after being successfully toilet trained. This regression often happens due to stress or changes in routine. Choices A, B, and C are incorrect because positive reinforcement involves encouraging desired behavior, desensitization is a process of reducing sensitivity to a stimulus, and phobia is an intense fear or aversion to a specific object or situation, none of which directly apply to the described situation of the child having accidents after being toilet trained.

Correct Answer: D

Rationale: The correct answer is D. The child is slightly taller than average, but the weight is within normal limits. This information should be reassuring to the parent and provides insights into normal growth patterns. Choice A is incorrect as it inaccurately states that the child is taller than other children this age. Choice B is incorrect because the child's weight is actually within normal limits. Choice C is incorrect as it inaccurately states that the child is shorter in stature than other children this age.