Which of the following travels the slowest in the vacuum of space?

Infrared light

X-rays

Radio waves

They all travel the same speed.

Visible light

They all travel the same speed.

Explanation:

In the vacuum region, all the light or waves, travels at the same speed, i. e., at 299,792 kilometers per second, due to the free space available without any obstruction or hindrance.

Being it to be X - rays, Visible light, Infrared light, all travel at the same speed,

Hence, the correct answer to the statement given in question would be, They all travel the same speed.