The correct answer is (A).
Getting to the Answer:In this question, the objective is to find the answer choice that describes a use for "one of the technological marvels." Because the underlined portion immediately follows "nylon," expect the correct answer choice to include a use for this material.
(A) Correct: "and the first nylon stockings" describes a use for nylon material
(B) Incorrect: "it was man-made" describes how nylon was made, not a use for nylon
(C) Incorrect: "natural materials had been used" describes how nylon was made, not a use for nylon
(D) Incorrect: "not the same as Orlon" differentiates nylon from Orlon instead of describing a use for nylon
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