Research Papers / Help thinking of several points for my Death Penalty Research paper! [5]

RESEARCH PAPER GUIDELINES
1. 5-7 pages, double-spaced
2. Minimum of 5 sources, no more than two form the web.
3. MLA Format. Double-chekc, triple-check that the formatting is correct.
4. No cover page.
5. WORKS CITED. MLA Format.
6. Outline not necessary.
7. Due April 13th. No late papers accepted.
8. Times New Roman or Garamond font ONLY.

I will be marking a point off for everything that does not fall in step with MLA format, so take the time to double check, have a friend look it over, read aloud, etc.

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I am writing a 5 to 7 page research paper on the Death Penalty. I have narrowed down this topic by deciding to write about the cost of lethal injection versus the cost of life imprisonment. This is my outline so far:

1.) Intro/thesis
2.) Cost of lethal injection
3.) Cost of life imprisonment
4.) Point 2 & 3 compared (possibly)
5.)
6.) Conclusion

Any suggestions on what some of my points should be?