Which of the following is a requirement for health insurance plans set by the ACA?

The Affordable Care Act (ACA) established various essential health benefits that all health insurance plans must include to ensure comprehensive coverage for individuals. One of these essential health benefits is pediatric services, which encompasses both primary and specialty care for children. This requirement aims to provide adequate healthcare services tailored to the needs of younger populations, recognizing the importance of early and preventive care throughout childhood.

Including pediatric services ensures that children have access to necessary medical treatments, vaccinations, and preventive services designed to maintain their health and promote proper development. This requirement also reflects the ACA's commitment to improving health outcomes for children by mandating that all qualified health plans provide this coverage.

In contrast, the other options reflect provisions that the ACA specifically sought to change or improve. For instance, limiting coverage for primary care, allowing plans to refuse coverage for pre-existing conditions, or not covering preventive services directly contradicts the ACA's overarching goals to expand access to comprehensive and equitable healthcare for all individuals.