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
After cars, because the word ends in an s and is plural, you just add an apostrophe after it:
Eight other families cars’ also need to be serviced ahead of ours.
Just switch every “I” to He