The correct option is C The earth rotates on its axis vertically.
Poles are located on either end of the imaginary needle that has come to be known as the axis. Proof of their location lies in the fact that the earth rotates vertically on its axis. Now, for the sake of science, imagine if the earth rotated horizontally on its axis, with one end of it pointed towards the sun. Such a scenario would completely change how days and nights function while also altering the concept of seasons and life itself, perhaps.