The nurse is discussing development and play activities with the parent of a 2-month-old boy. Recommendations should include giving him his first rattle at about what age?

Correct Answer: B

Rationale: It is recommended to give a brightly colored toy or rattle to a 2-month-old at around 4 months of age. At this stage, grasping has begun as a deliberate act, and the infant can grasp, hold, and begin shaking objects to produce noise.

Correct Answer: D

Rationale: Gestational age and birth weight are the most critical risk factors for NEC, with lower gestational age and lower birth weight significantly increasing the risk.

Correct Answer: D

Rationale: Hepatitis A is an RNA virus, and its extrahepatic manifestations include cutaneous vasculitis and arthritis.

Correct Answer: D

Rationale: Tricuspid atresia leads to severe cyanosis due to lack of right atrioventricular connection, necessitating a right-to-left shunt for survival. It presents early with cyanosis and hypoxia requiring urgent intervention.

Correct Answer: C

Rationale: Early onset is typically associated with a worse prognosis.