Which of the following is NOT a type of car wash service offered by Delta Sonic?

The correct answer is C, as oil change service is not categorized as a type of car wash service offered by Delta Sonic. While Delta Sonic provides a variety of car wash options including exterior washes, full-service washes, and detailing services, the oil change is a maintenance service rather than a washing service. This distinction is important because it highlights the different categories of services offered by Delta Sonic.

Understanding these distinctions helps customers choose the appropriate service based on their needs, whether they are looking for a wash to keep the car's exterior clean or maintenance services to ensure the vehicle runs smoothly.