Final answer:
The US can learn to improve access to care by examining healthcare models from other countries that offer universal coverage and manage to keep costs low while ensuring basic medical services are accessible to all citizens.
Step-by-step explanation:
The question posed is, what can the US learn most from other countries in healthcare delivery. Considering the context provided about the US healthcare system and its comparison with other countries, the answer would likely focus on Improving Access to Care (D). The US healthcare system is known for high quality of care and innovations, but it faces significant challenges related to high costs and ensuring equitable access to basic medical services. Learning from healthcare models of other countries that have achieved lower costs and more equitable access could prove beneficial in terms of policy-making and system reforms.
Countries that excel in providing universal coverage offer examples of ways to achieve greater access to healthcare without sacrificing quality. Moreover, as the Affordable Care Act (ACA) has shown, increasing access can be a popular and politically viable objective, especially as it becomes entrenched in the system and public sentiment shifts towards maintaining and improving it.