It takes 24 hours (one full day) for the earth to

It takes 24 hours (one full day) for the Earth to complete a rotation around its own axis from west to east.

Explanation:

   Rotation is the name of the movement performed by planet Earth around its own axis from west to east. This is the movement that determines the succession of days and nights.

  In addition, the rotational motion of the earth causes the apparent movement of the sky. If we look at a star for a certain time, we will see that its position will change.

it would be 2 or b because the clouds are a form of condensation

reflecting point a across the origin negates both of its coordinates.

b = (5, -4)