On opening day, officials quickly realized the new subway system was not enough to relieve overcrowding in the city. Which sentence from the text explains why?
A The city would own the system, and Belmont would construct it for $35 million.
B The streets hummed with more than 100,000 people making their way to the subway for a five-cent ride.
C In an age before machines, workers used picks and shovels during construction of the subway.
D In the end, this first phase of the subway’s construction employed between 7,000 and 12,000 laborers.
The correct answer is B: “The streets hummed with more than 100,000 people making their way to the subway for a five-cent ride.”
Explanation: This sentence highlights the overwhelming number of people heading to the subway, indicating that the system was unable to accommodate the sheer volume of riders, which contributed to ongoing overcrowding in the city.