Answer:
D. In my city, there are many ways to get from place to place: walk, ride the bus, ride a train, or drive a car.
Step-by-step explanation:
A colon is used to introduce a list of nouns -- nouns in the sense that the items must agree with the noun subject (in this case, 'ways'). Walking, riding, riding and driving are all 'ways' to get from place to place.