High use academic words are used in essays and formal letters whereas key terms would be found when reading a passage or context. Key terms would normally be highlighted.
I be leave its D because people will want to know why it you think a large scale solar power plant is suitable.
Such as you could say.
A large scale solar power plant is suitable because it will be cheaper to run and better for the environment.
hope this helps
Turtle14526
reason is the power of synthesizing into unity.
