Final answer:
The reservations department at a car rental chain with self-contained sales operations can be classified as a sales department or a clerical or office department.
Step-by-step explanation:
The reservations department that has self-contained sales operations at a car rental chain may be classified as a sales department or a clerical or office department.
This department is responsible for handling reservations and sales transactions, managing customer inquiries, and ensuring a smooth rental process for customers. They may also be involved in upselling additional services or products to customers.