HELP!!!!!!! 40 points! I WILL GIVE BRAINLIEST IF RIGHT

The electromagnetic spectrum includes all electromagnetic waves, from radio waves with long wavelengths and low frequencies to gamma rays with short wavelengths and high frequencies. Which statement best describes how fast these waves travel in a vacuum?
a) Infrared waves travel faster than ultraviolet wave
b) High-frequency waves travel somewhat faster than low-frequency waves
c) All electromagnetic waves travel at the same speed.
d)Gamma rays travel much faster than others because they have the highest frequencies

Electromagnetic waves or EM waves are the waves of electromagnetic field, The EM waves differ from mechanical waves, as they do not require any medium to travel. The EM waves can travel in solid, liquid, gas as well as in vaccum.

The speed of a wave in the vacuum can be given by:

Speed = Wavelength [tex]\times[/tex] Frequency.

In the EM spectrum, there have been waves with higher wavelength and lower frequency, and with lower wavelength and higher frequency. The product of the wavelength and frequency for the EM spectrum has been constant.

Thus the waves in the EM spectrum have been traveling at the same speed in a vacuum. Thus, option C is correct.

For more information about the Electromagnetic spectrum, refer to the link:

https://brainly.com/question/23727978