Accountable care organizations (ACOs) utilize "hot spotting" as a population health tool to:

Detailed Explanation:

Hot spotting in population health is the strategy of identifying and targeting high-cost, high-need patients, often those with chronic conditions, to allocate resources effectively and reduce overall healthcare costs.

Option C: Identify and focus resources on high-cost, chronically ill patients

This approach is central to ACOs’ population health management, targeting those who need the most resources for better care coordination.