The answer is D. commit + -ment
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The answer is B</span>
<span /><span><span>traditional stories, rooted in a particular culture, that attempt to explain something about the world</span>
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Civil wars are wars fought between different groups that live in the same country. So, the U.S. was fighting itself (basically North vs. South)
This paragraph supports the claim by providing an example of a situation where people need more sleep to function. Doctors do a lot of work on the job that requires higher brain function, as stated by the paragraph. The study mentioned provides good evidence for the fact that people should be well rested, saying it causes less mistakes.
Hope this helps!
