What is NOT a responsibility of air traffic control?

The responsibility of air traffic control is primarily focused on ensuring the safe and efficient movement of aircraft in the sky and on the ground. Guiding aircraft during takeoff and landing is a fundamental duty, as controllers provide crucial information and directions to pilots during these critical phases of flight. Monitoring weather conditions is also vital, as controllers must be aware of any weather-related issues that may impact flight safety, including turbulence, storms, and visibility.

Coordinating flight paths to avoid collisions is another key task, as air traffic controllers manage the separation and sequencing of aircraft in the airspace, ensuring that they maintain safe distances from one another.

In contrast, providing in-flight medical assistance is not within the scope of air traffic control responsibilities. This task falls to the cabin crew or medical personnel who may be on board the aircraft, as they are trained to handle medical emergencies among passengers during flight. Thus, option C accurately identifies an activity that is outside the responsibilities of air traffic control.