Read the passage from anthem, by ayn rand. in this passage, the narrator is exploring an old, abandoned underground tunnel. but we pulled at the grill (on the ground) and it gave way. and then we saw iron rings as steps leading down a shaft into a darkness without bottom.… it was a great tunnel. its walls were hard and smooth to the touch; it felt like stone, but it was not stone. on the ground there were long thin tracks of iron, but it was not iron; it felt smooth and cold as glass. we knelt, and we crawled forward, our hand groping along the iron line to see where it would lead. but there was an unbroken night ahead. what can you infer about the tracks described in the bold text? they are lanes on a highway. they are long tubes of glass. they are subway or train tracks.

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.

well basically since ima beginner people will answer any subject "right away"and if you get more points you could ask more questions or if you answer someone's question you get points

a. "to practice" is the best phrase to complete the sentence.

explanation:

during the summer, she likes to practice her soccer skills so that she is ready to play in the fall.

(note that : all the other options "the practicing of", "practice for" and "to do a practice on" are inappropriate as they make the sentence grammatically incorrect.)