it is ALWAYS important to cites ALL of your sourses to avoid plagiarism. I normally at the end of my paper make a new paragraph and title it "Works Cited". type citation machine into google for more help writing a fromal citation. Remember most junior and high schools only allow certan citation styles but your best bet is either APA or MLA. hope this helped.
Answer:
the speaker can no longer see which direction the road goes. the undergrowth obscures the road's direction from the speaker's sight.
It's B.) Because the evidence can appropriately support an opinion.