It is the the ecrins of light
The answer would be C. Refraction
Answer:

Explanation:
Since the Earth's magnetic field is perpendicular to your direction of motion, the strength of the magnetic force exerted on your head is given by:

where:
is the charge on your head
is the speed at which you are moving
is the strength of the magnetic field of the Earth
By substituting these numbers into the equation, we find the strength of the magnetic force:

It could be warmer solid, or liquid, or gas, depending on the pressure and the amount of heat added.
Answer:
(C) Average Velocity = 25 m/s due North