The United States ranks poorly in terms of worldwide infant mortality rates. Which factor has the greatest impact on decreasing the mortality rate of infants?
Correct Answer: B
Rationale: The correct answer is B: Ensuring early and adequate prenatal care. Early and adequate prenatal care is crucial in identifying and addressing any potential health issues for both the mother and the baby, leading to healthier outcomes and a decrease in infant mortality rates. Providing more women's shelters (A) may help with social support but does not directly impact infant mortality rates. Resolving all language and cultural differences (C) is important for effective communication but does not directly impact infant mortality rates. Enrolling pregnant women in the Medicaid program (D) is beneficial for access to healthcare, but ensuring early and adequate prenatal care is more directly linked to decreasing infant mortality rates.