The best option for the answer of this question is A) <span>The Main idea is the primary point of a piece of writing.</span>
The answer is: They are subway or train tracks.
In the excerpt from "Anthem," by Ayn Rand, the narrator travels through an abandoned underground tunnel. She describes how they go below ground into a large tunnel and see the "long thin tracks of iron," which is not iron. They also touch the cold and smooth train or subway tracks, and crawl forward intending to find out where the tracks take to.
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the 3rd sentence is correct
Answer:
Hydroelectric power is produced with moving water
At hydropower plants water flows through a pipe, or penstock, then pushes against and turns blades in a turbine to spin a generator to produce electricity. hope this help in any way!
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