Explanation
Correct answer: A.
Choice A is the best answer. “Accordingly” logically signals that the information in this sentence—that Precisionist works often feature angular, symmetrical structures, such as skyscrapers, bridges, and factories—is in accordance with the previous claim about the Precisionist style of “cold, machine-like perfection, with crisp lines, geometric shapes, and smooth, brushstroke-free surfaces.”
Why the other choices are wrong
Choice B
Choice B is incorrect because “in the end” illogically signals that the information in this sentence is a final conclusion or summary of the previous claim about the Precisionist style. Instead, the sentence describes features in Precisionist works that are in accordance with that style.
Choice C
Choice C is incorrect because “that said” illogically signals that the information in this sentence is an exception to or qualification of the previous claim about the Precisionist style. Instead, the sentence describes features in Precisionist works that are in accordance with that style.
Choice D
Choice D is incorrect because “however” illogically signals that the information in this sentence contrasts with the previous claim about the Precisionist style. Instead, the sentence describes features in Precisionist works that are in accordance with that style.