The answer is d. Just so you know
Water vapor , you need a liquid to have acid rain-(rain is water btw)
<span>The answer is D - the Gravitational attraction between the earth and the moon.
</span>
At that time, plate tectonic movements shoved all of the continents into one big super continent. After that time, plate movements started to break up this super continent until the continents eventually reached their present configuration.