What is the frequency band of the ILS localizer?

The frequency band of the Instrument Landing System (ILS) localizer operates between 108.0 and 111.975 MHz. However, in the context of the provided choices, 108.0 - 112.0 MHz encompasses the entire operational range of the ILS localizer, making it the most accurate choice available.

This range is specifically allocated for precision approach systems such as the ILS localizer. The localizer is part of the ILS guidance system and provides lateral guidance to aircraft as they approach the runway. The frequencies within this range are designed to ensure minimal interference and optimal performance for navigating aircraft during their final approach, thereby contributing significantly to flight safety and accuracy.

Other choices either do not cover the full necessary range of the localizer frequencies or are outside of the intended operational spectrum.