Which of the Following Could Occur Only After Plants Moved

Which of the following could occur only after plants moved from the oceans to land?

A) Animals could also move onto land because there were opportunities for new food sources.
B) Animals could also move onto land because they had easier access to nitrogen.
C) Cyanobacteria could also move onto land because their host plants occurred there.
D) Plants in the oceans were able to evolve forms that lived in much deeper parts of the oceans.