How were people who worked in the city affected by the invention of the railroads?
A. They had to pay more to ride the trains.
B. They had more money left over at the end of the month.
C. They had to move closer to where they worked.
D. They could move farther away from where they worked.

Actually Welcome to the Concept of the History.

As we know that the introduction of Rail roads helped to interconnect many cities ans Towns, hence now people were able to travel farther distance and do their work and other important things.

Hence,

D.) They could move farther away from where they worked.

where is the passage

i cant solve it without knowing the passage