Correct Answer: D

Rationale: Research shows that the quality of parenting in homosexual families is equivalent to that in heterosexual families, and children thrive in nurturing environments provided by same-sex parents.

Correct Answer: B

Rationale: An authoritative parenting style, which balances warmth with firmness, is associated with fostering self-reliance and independence in children.

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: A

Rationale: The correct answer is A: Sitting independently. By 11 months, most infants can sit independently. This milestone usually precedes walking, which typically occurs closer to 12 months. Turning a doorknob and building a tower of four cubes involve more complex motor skills that are typically achieved later in development. Therefore, at 11 months, sitting independently is the milestone that the nurse would expect an infant to have achieved.

Correct Answer: C

Rationale: Healthy People 2020 focuses on decreasing tobacco use, improving immunization rates, and increasing access to healthcare among its leading health indicators.