I think the correct answer is C
The only error I can see in this sentence is roll-a-coaster. I believe it should be a roller coaster instead, which is a ride in amusement parks. Other than that, it is more grammatically correct to say "I've just gotten off the wooden" rather than "I just got off the wooden" however, it's up to you.
This is an argument, because Obama is striving to prove that America needs a new strategy for energy. In this argument he uses logos when he gives the audience specific statistics to support his point. He also uses pathos when he appeals to the emotions of the audience, the emotion of hope for a brighter and cleaner future.
The presence or introduction into the environment of a substance which has a harmful or poisonous effects
