<span>The quotations which stand as examples of opinion are: We act as if we have all the time we want and all the solutions. We are all in this together and should act as one single world towards one single goal. In both cases you can see how a speaker expresses his own thoughts towards particular situation. In the first sentence there is "as if" used, which leads us to conclusion that the speaker compares something based on his perception.The second sentence contains incentive suggestion which also is derivative from someone's opinion.<span>
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<span>Muckrakers of the 19th century can be compared to some, but not all modern day journalists. Muckrakers were famous for "digging up dirt" on people and exposing them. Today's journalists do similar things, especially in the current political environment. However, today's journalists have it easier with the inventions of social media and the Internet. It's much easier to "dig up dirt" on people and expose them.</span>
It was a trade route over the sea. It contributed in the slave trade between Africa, Cuba, and the USA (might be called the American Colonies, depends on the time)
I think the answer is C. I hope this helps :)