Which of these best explains why earth’s inner core is solid?

I believe the answer is high pressure due to other layers forces the particles to stay close together. It can’t be the first option because no pressure would let them act as they want to. It can’t be the third option because heat will cause the particles to move much more than they would in cold temperature. It could be the last option since cold keeps particles still but the temperature inside the earth is quite hot so the inner core wouldn’t be cold. I hope this helps!

Explanation: lmk if I’m right ((:

one part of the electromagnetic spectrum that arrives on earth as solar radiation from the sun is the visible spectrum. wavelengths of the visible spectrum combine to form what we refer to as

answer - d) ultraviolet radiation.

violet /   380–450 nm / 668–789 thz

violet is number 1 in the chart of visible light.