What are used to document communications made with a carrier?

The correct answer is call checks. Call checks are specifically used to document communications made with a carrier, serving as formal records of conversations or interactions that take place. They can include details such as the date and time of the communication, the individuals involved, the subject discussed, and any decisions made. This documentation is critical for maintaining clear communication trails, ensuring accountability, and resolving any potential disputes that may arise regarding the specifics of the discussions with the carrier.

In contrast, invoices are generally used for billing purposes rather than documenting communications. Rate tables serve to provide pricing information but do not track interactions. Enterprises typically refer to organizations or businesses and do not pertain to the act of communication documentation. Therefore, call checks are the most appropriate choice for tracking communications with a carrier.