The first one is the one that English teachers look for. Although a professional research paper is important, it can be accomplished without multiple sources.
Plagiarism is only the case when that one source is the only writing in your paper, or you didn't cite the source.
As for the length, I can make a pretty strong point in one paragraph.
Answer:
The answer to your question is b/a
Answer:
The significance of Jack's mask in chapter 4 of Lord of the Flies is that it allows him to feel liberated from "shame and self-consciousness" as he embraces his savage nature without guilt or embarrassment. Hidden behind his clay mask, Jack is free to behave like a primitive, bloodthirsty savage.
Contrast: Insects may have entered a cool home and earthworms would have escaped to under the cool soil.
Compare: They both may have gone to a chilly area from their instincts.
He was the first president to make thanksgiving a national holiday