Which best describes electromagnetic waves moving from gamma rays to radio waves along the electromagnetic spectrum?

Wavelength increases and frequency decreases.

Explanation:

Electromagnetic spectrum is formed of radiations varying in frequency and wavelength like gamma rays, radio waves, UV rays, visible, and microwaves. We know that wavelength is proportional to frequency. Since the wavelength is proportional to frequency, the wavelength increases.

i think the answer is a, hope this : )