C should be the answer. A doesn't help you organize information, because it's "random" labeling. B includes paragraphs, which you usually don't construct in an outline bc outlines are brief. for D, it's a research paper and one can assume that all information is fairly relevant and important, plus color coding isn't a typical part of an outline. E says to list it alphabetically but that doesn't help you organize your information either because you don't necessarily want your research papers to be alphabetical, you want them to follow a logical path.
B.) The Manuscript for His New Book
The cow would be consuming 80 gallons of water during a hot day. If on any day the cow drinks 40 gallons on a hot day it drinks double the amount so you multiply them by 2 and its 80. I hope this answer can help you.
