Which of the following communication bands operates at 30-89 MHz?

The correct answer is VHF low, which refers to the Very High Frequency low band that operates within the frequency range of 30 to 89 MHz. This band is part of the broader VHF spectrum, which is typically divided into two main categories: VHF low and VHF high. The VHF low band is commonly used for various types of communication systems, including two-way radios, public safety communications, and other specialized radio services.

In contrast, the VHF high band operates at frequencies ranging from 88 to 216 MHz, which is above the VHF low range. Similarly, UHF, or Ultra High Frequency, spans from 300 MHz to 3 GHz, focusing on even higher frequencies than those found in the VHF categories. HF, or High Frequency, operates within the range of 3 to 30 MHz. Each of these bands has distinct properties and applications, making VHF low the only correct option among the choices provided.