Correct Answer: A

Rationale: The correct answer is A: 1 year. The hepatitis A vaccine is now recommended for all children starting at age 1 year (i.e., 12 to 23 months). This is due to the recognition of hepatitis A as a significant child health problem, especially in areas with high infection rates. The virus is primarily spread through fecal-oral transmission, person-to-person contact, ingestion of contaminated food or water, and rarely through blood transfusion. Administering the first dose at 1 year helps protect children from this infection. Choices B and C are incorrect as the vaccine is not recommended at 1 month or 12 years. Choice D is also incorrect as the hepatitis A vaccine is recommended at a specific age to prevent the infection.

Correct Answer: C

Rationale: Family systems theory views the family as an interconnected system where changes in one member affect the entire family, making it ideal for assessing group dynamics.

Correct Answer: A

Rationale: The United States is ranked last among developed countries with similar populations in terms of infant mortality rates, highlighting a significant public health concern.

Correct Answer: B

Rationale: Supporting an adolescent in making decisions about their care reflects the moral value of autonomy, emphasizing the importance of respecting the patient's right to make informed choices.

Correct Answer: A

Rationale: Parents become apprehensive and worried as the time for discharge approaches, which is a common parental reaction. They often have concerns and insecurities about caring for their infant. The worry about potential dangers is a normal adaptive response reflecting the parents' concern for their child's well-being. It is essential for healthcare providers to acknowledge these feelings and support parents in gaining confidence in caring for their infant. Choices B, C, and D are incorrect because the parents' apprehension in this context is a typical emotional response and not indicative of maladaptation, a reason to postpone discharge, or inadequate bonding.