The frequency range of radio waves is ______.

Correct option is A

The correct answer is (a) 3 kHz to 300 GHz.
Explanation:
Radio waves are a type of electromagnetic wave with frequencies that typically range from 3 kHz (kilohertz) to 300 GHz (gigahertz). This range covers the frequencies commonly used for radio, television, mobile communication, and satellite transmissions.
Frequency Bands within the Radio Wave Spectrum:
· Very Low Frequency (VLF): 3 kHz to 30 kHz
· Low Frequency (LF): 30 kHz to 300 kHz
· Medium Frequency (MF): 300 kHz to 3 MHz
· High Frequency (HF): 3 MHz to 30 MHz
· Very High Frequency (VHF): 30 MHz to 300 MHz
· Ultra High Frequency (UHF): 300 MHz to 3 GHz
· Super High Frequency (SHF): 3 GHz to 30 GHz
· Extremely High Frequency (EHF): 30 GHz to 300 GHz