The choice which is the best paraphrase of the text is:
A paraphrase is the use of different words to express the same idea of an article or paragraph without changing the original idea.
As a result of this, we can see that from the given text, the author is talking about steel beams and skyscrapers and the way they are produced. This is best paraphrased in the option B
Therefore, the correct answer is option B
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