If experiencing icing conditions, what should be activated to alleviate the situation?

The most appropriate action to alleviate icing conditions in flight is to activate pitot heat. The pitot tube is crucial for maintaining accurate airspeed readings, which are essential for safe flight operations. Ice formation on the pitot tube can obstruct airflow, leading to erroneous airspeed indications. Activating pitot heat helps prevent ice buildup, ensuring that the instruments remain reliable, thereby allowing the pilot to maintain adequate control of the aircraft.

While electrical heat and wing heat might seem relevant for addressing icing, these typically pertain to de-icing systems for the wings or other critical areas of the aircraft structure. Carb heat is designed to combat carburetor ice and would not address the broader issue of pitot tube icing specifically. Thus, activating pitot heat is the best response to mitigate icing conditions directly affecting instrumentation and flight safety.