The picture lists light waves from left to right in order of highest to lowest energy.Which region of the electromagnetic spectrum has the longest wavelength? a UV b Gamma Rays C Radio Waves d Visible Light

## Step 1<br />The electromagnetic spectrum is a continuum of all electromagnetic waves arranged according to frequency or wavelength. The spectrum is generally divided into seven regions in order of decreasing wavelength and increasing energy and frequency: radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.<br /><br />## Step 2<br />The question asks which region of the electromagnetic spectrum has the longest wavelength. The options provided are:<br />a) UV (Ultraviolet)<br />b) Gamma Rays<br />c) Radio Waves<br />d) Visible Light<br /><br />## Step 3<br />Among these options, radio waves have the longest wavelength. Therefore, the correct answer is option c) Radio Waves.