Answer :
The way in which the streetcars changed the way that cities were organized was the D. city centers became business districts.
What is a City?
This refers to a geographical location that is part of a country and houses people of similar ethnicity and other settlers.
Hence, we can see that with the introduction of streetcars, there was a change in the city's organization as there was a gradual shift, and city centers became business districts.
Read more about cities here:
https://brainly.com/question/26051431