Answer:
Sonar, short for Sound Navigation and Ranging, is helpful for exploring and mapping the ocean because sound waves travel farther in the water than do radar and light waves.
Explanation:
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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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Surplus is bad for a business because the store has to buy the goods and if they have surplus which means extra, then that means they lost money because they paid for something they didn’t use
