Final answer:
Medicare Administrative Contractors (MACs) are the entities responsible for the daily operations of the Medicare program, processing claims and managing healthcare services for beneficiaries.
Step-by-step explanation:
The entity that is assigned the daily operation of the Medicare program by the Centers for Medicare & Medicaid Services (CMS) is C) MAC, which stands for Medicare Administrative Contractor. These contractors are typically private companies that have been awarded geographical jurisdictions to process Medicare Part A and Part B medical claims or Durable Medical Equipment claims.
Medicare, which mainly offers insurance to people over the age of sixty-five, works with these MACs to ensure that day-to-day operations and claims processing are managed effectively. The MACs role is crucial for keeping the Medicare system functioning and providing health benefits to its beneficiaries.