Final answer:
The original U.S. Megalopolis includes New York City and Boston as endpoints.
Step-by-step explanation:
The original U.S. Megalopolis, a huge urban corridor encompassing multiple cities and their surrounding suburbs, includes the endpoints of New York City and Boston. These cities are part of the Northeastern Core, which stretches from south of Boston all the way to Washington D.C. The megalopolis also extends west to cities like Chicago and Detroit. Therefore, the correct answer is A) New York City and Boston.