A) Railroad stations. A major reason would be that street cars are not absolutely necessary in a neighborhood but its quit common and it wouldn't be the same without them. But it was something that made a big impact. There's other reasons but this is the best that I an describe it.
The correct answer to the analogy is B. Skyscrapers, as both streetcars and skyscrapers played pivotal roles in shaping urban environments in the 1800s. Streetcars allowed for suburban expansion, while glass and steel were key materials that enabled the construction of skyscrapers. Together, they represent significant advancements in city growth and architectural development during that time.
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