Final answer:
Tertiary care represents the highest level of care, with specialized facilities like the ICU, oncology treatment centers, and burn centers serving as prime examples of such settings.
Step-by-step explanation:
When discussing levels of health care services, tertiary care refers to specialized consultative health care, typically for inpatients and on referral from a primary or secondary health professional, in a facility that has personnel and facilities for advanced medical investigation and treatment, such as a trauma center or burn unit. Among the examples provided, the following should be classified as tertiary care: ICU (Intensive Care Unit), an Oncology treatment center, and a Burn center. These are settings where specialized care is provided beyond primary care (given by general practitioners) and secondary care (provided by medical specialists for referred patients).