Final answer:
Teenage mothers have higher rates of preterm birth and low birth weight in the US due to factors like inadequate healthcare access, nutrition, and socioeconomic challenges.
Step-by-step explanation:
The higher rates of preterm delivery and low birth weight in the United States tend to be more prevalent among a certain demographic. After evaluating the provided options, the answer is clear. Option 2: Teenage mothers, considerably face higher challenges and risks in terms of preterm delivery and low birth weight compared to other groups.
Teenage mothers often have higher rates of preterm birth due to a variety of factors including lack of access to prenatal care, nutritional deficiencies, and socio-economic factors. These include insufficient prenatal education and higher levels of poverty, which can contribute to both increasing the risks during pregnancy and also affecting the infant's birth weight. Additionally, the healthcare system and societal factors may also play a role in the disparities seen in birth outcomes.