TOEFL Listening: ETS-TOEFL听力机经 - S3IQ401YH81NY3NGP$

Why does the professor mention the New York World Building? A. To highlight the difficulties associated with building early skyscrapers B. To give an example of a skyscraper located in one of the early business districts C. To show that proximity to railway stops was an important factor for developers D. To show that some skyscrapers were developed above deep bedrock