Which switch provides pitot heat for both pitot probes?

The choice that indicates the correct switch for providing pitot heat for both pitot probes is the probes anti-ice switch. This switch is specifically designed to activate the heating elements within the pitot probes, ensuring that they remain free of ice build-up during flight. Icing on the probes can lead to erroneous airspeed readings, which can significantly affect flight safety and performance.

The functionality of the probes anti-ice switch is critical, especially in colder climates or during flight in cloud formations where icing is a concern. By directly addressing the need for pitot heat, this switch serves a vital role in maintaining the accuracy of essential flight instruments.

Other switches mentioned serve different purposes, such as controlling electrical systems or flight control functions, thus they do not address the specific need for pitot probe heating. The specific design and function of the probes anti-ice switch make it the only switch suitable for this particular task.