What do radio waves and microwaves have in common?

both are found next to visible light on the electromagnetic spectrum.

both are at the side of the spectrum that has the shortest wavelengths.

both are at the side of the spectrum that has the lowest frequency.

both have higher frequencies than visible light.

Both are at the side of the spectrum that has the lowest frequency.

Explanation:

We know that the electromagnetic spectrum is the set of several waves that are arranged in order of increasing wavelength of decreasing frequency. It consists of many waves like,

gamma rays, x- rays, ultraviolet rays, visible, infrared rays, microwave, radio waves.

Radio wave has the longest wavelength while gamma rays has maximum wavelength. From the attached figure, it is clear that the frequency of radio wave is least and that of microwave is second least frequency.

Hence, the correct option is (c).

b would be the answer