Which frequency range is from 30 kHz to 300 kHz?

The correct choice is based on the established definitions of frequency ranges in radio communication and other fields. The frequency range from 30 kHz to 300 kHz falls within the category of Low Frequency (LF). This designation is important because different frequencies are used for various types of communication, broadcasting, and technology, each having unique characteristics and applications.

Low Frequency (LF) is known for its ability to travel long distances and penetrate various mediums, making it suitable for maritime and aeronautical communication. This frequency range is effective for transmitting information over large areas, as lower frequencies can follow the curvature of the Earth and typically suffer less signal attenuation.

The other options do not correctly encompass this frequency range. Specifically, Super Low Frequency (SLF) pertains to frequencies below 30 kHz, while Medium Frequency (MF) covers 300 kHz to 3 MHz, and High Frequency (HF) ranges from 3 MHz to 30 MHz. Understanding these classifications is crucial in fields such as telecommunications, broadcasting, and navigation.