The answer is A, because the protagonist is the main character, and that's what Rider is. The other answers don't really make sense in terms of the role he plays in the story.
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The poem “dover beach” by Matthew Arnold uses _____ as a symbol of continuity and change.
A. The Sea
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A) affect is the best word to complete this
The acronym SMART stands for
Specific
Measurable
Attainable
Realistic
Timely
The last step is D, because after you find it and look into it you need to do it so that you know it is right.