What does the term "c-store" refer to in the context of a service station?

The term "c-store" refers to a convenience store, which is especially relevant in the context of a service station. Convenience stores are typically located at gas stations and offer a wide range of products, including snacks, beverages, and other essential items for travelers or customers fueling up. This format allows for quick shopping experiences, catering to individuals looking to grab something on the go, which aligns perfectly with the fast-paced environment of a service station.

In contrast, the other options describe different aspects of service stations or related businesses but do not accurately capture the definition of "c-store." Fast food outlets and gas stations are distinct types of services found at or near service stations but do not encompass the breadth of items typically offered by convenience stores. A rest area generally refers to a designated location along highways for travelers to take a break, which is also separate from the convenience store concept.