What is the role of a temperature gauge in de-icing procedures?

The role of a temperature gauge in de-icing procedures is crucial because it provides information on whether the environmental conditions are appropriate for effective de-icing. De-icing fluids work optimally within specific temperature ranges. If the temperature is too low, the fluid may not perform effectively, leading to ice formation. Conversely, if the temperature is too high, the fluid may not adhere properly to the aircraft's surfaces. By monitoring the temperature, personnel can ensure that the de-icing processes are executed under suitable conditions, maximizing their effectiveness and ensuring the safety of the flight.

Other choices focus on different aspects unrelated to the primary function of a temperature gauge in de-icing. For instance, measuring the amount of de-icing fluid applied, checking fuel levels, or gauging pilot performance do not relate to assessing the suitability of weather conditions for de-icing procedures.