C is the answer. A semi-colon adds more info to something
Disneyland, founded in 1955, gave Americans a more thrilling and enjoyable ride. One of the country’s first theme parks, the theme park and its all-American cartoon style was incredibly popular with children and adults alike. While ferris wheels and boat rides were more common at the time, rollercoasters were considered dangerously exciting, thus appealing to the younger demographic.
Answer: customers come in and out of the deli at a steady pace.