Which statement is true about the motion of planets? The motion from a planet's rotation causes the planet to move forward. Forces in space prevent the planets from moving. Gravitational force between the sun and planet cause an elliptical orbit. Internal forces from the planets keep the planets moving.

I beleive it is D.

Internal forces from the planets keep the planets moving.

Explanation:

Plant movements can be defined as the changes in the spatial orientatiom or conformation of an organ or it’s parts. Planet movements include movements toward light, opening and closing flowers, growth of developing roots in search of water and nutrients, etc.