What concourses are associated with Terminal 3?

The correct answer identifies Concourses G, H, K, and L as being associated with Terminal 3 at O’Hare Airport. This is relevant because Terminal 3 is primarily used by several major airlines, including American Airlines and is a significant hub within the airport's operations. Knowing the correct concourses helps drivers, employees, and travelers navigate the airport effectively, ensuring they reach the correct departure or arrival areas.

In contrast, the other options refer to concourses that either belong to different terminals or do not reflect the actual concourse designations for Terminal 3. Ensuring familiarity with specific concourse assignments is crucial for efficiency and safety in airport operations and travel.