Final answer:
The statement is (a) true.
Step-by-step explanation:
When a potential advertising client lays out basic information about its business and requirements for a future advertising job and enhances this information with questions that will help that client determine how agencies work and whether the agencies are suited to the task at hand, the advertising client has created what is known in the advertising trade as a call for business (CFB).
CFB is a way for a client to gather information from agencies and assess their capabilities before engaging their services. It allows the client to understand how agencies operate and make an informed decision on which agency is best suited for the job.
Therefore, the statement is true.