Correct Answer: D

Rationale: A heavy roundworm infection can cause anemia, anorexia, irritability, and an enlarged abdomen due to the worms' effects on nutrient absorption and intestinal function.

Correct Answer: B

Rationale: The correct answer is B: Anterior. The anterior fontanel usually remains open until about 12-18 months of age, while the posterior fontanel closes by 2-3 months. Choices A, C, and D are incorrect as the posterior fontanel closes by 2-3 months of age, and the sphenoid and lambdoid fontanels are not typically assessed in routine infant head examinations.

Correct Answer: D

Rationale: The priority action for the nurse when the apnea monitor alarm sounds on a neonate is to assess the infant for color and the presence of respirations. This initial assessment helps determine the infant's respiratory status and the need for immediate intervention. Providing tactile stimulation or administering oxygen should only be done after assessing the infant's respiratory status. Investigating possible causes of a false alarm comes after ensuring the infant's well-being through the initial assessment.

Correct Answer: D

Rationale: After cleft palate repair, the child will need ongoing follow-up with audiologists, speech pathologists, and orthodontists to monitor hearing, speech development, and dental alignment.

Correct Answer: A

Rationale: The first sign of puberty in boys is typically the enlargement of the testes. This is due to the increase in production of testosterone, which leads to physical changes such as growth of the testes. Choice B, decreased levels of testosterone, is incorrect as puberty is marked by an increase in testosterone levels. Choice C, voice deepening, and choice D, pubic hair growth, usually occur later in the puberty process compared to testicular enlargement, making them incorrect answers.