Which statement is true about the electromagnetic spectrum?
-the visible spectrum includes radio waves, light, and gamma rays.
-same wavelengths of light correspond to different colors.
-it contains a spectrum of visible light plus a wide array of nonvisible forms of radiation.
-the waves travel at a speed of 2.998 × 105 m/s.

The statement that tells a fact about the electromagnetic spectrum is the third option. Electromagnetic spectrum contains a spectrum of visible light and a wide array of non-visible forms of radiation. Electromagnetic spectrum is a common term for all frequencies and extended wavelengths of electromagnetic radiation or photons.

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