Answer:
1). The best answer is "D"
The chorus comments on the action of the play and clarifies the situation to the audience
2). The best answer is "B"
The best plans often come to mothing
Answer:
This was a quote from Ralph Waldo Emerson used to defend freedom and liberty. I think he's basically saying that what's the point of doing things if we aren't granted our freedom in return.
Hope I helped :)
I think you should use for example, because that second sentence is an example of the first. Hope this helps.