From my my experience this usually differs depending on the type of book it is, but I think the best choice is either A, to help the reader understand new concepts, or C., It allows the reader to focus on key ideas and information during the reading. I'd pick C though, since it's more in depth and makes more sense.
B. doesn't make that much sense unless the book is an argumentative or a persuasive book.
D. only applies to personal narratives. Nobody can understand a writer's personal experiences and attitudes otherwise.
"The Odyssey" is a Greek epic poem which was written by Homer. In the given excerpt above from this poem, the theme that is being conveyed in the given conflict is that it is wise to be aware of the enemy you encounter. The answer is option B. <span>
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Something that tarnishes easily is metal !
I agree with ur answer....under the surface...because of the context " drilled into the ground "