For inferences question: We will make sure the correct option can not be argued.
In Short, as business grows, creative department is encourage to support admin department despite admin is always completed on time whereas creative work is often unsatisfactory.
A. Employees in the creative department are incapable of helping those in the administrative department.
Not necessary: It is only given that they are encouraged to support admin department. It is true that creative work is often unsatisfactory but it may be possible that they spend more efforts on admin department due to strategy. Their capability can be argued in positive side or negative side.
B. The Big-Hype marketing firm will soon be out of business.
Reject: Maybe this strategy will continue to work by focusing on admin department. It maybe possible that they have only few big clients who are very much satisfied with the work as compared to large number of non satisfied clients. In this situation , they may not go out of business.
C. The Big-Hype marketing firm places more focus on administrative work than on creative work.Correct: The strategy is maintained inspite of admin work is completed on time. It seems admin focus more attention on admin work. Hence seems this option can not be argue. Hence correct
D. The administrative department has more time to complete its work than the creative department has.
Irrelevant: time factor is not at all mentioned. It may be possible that admin department needs less time and still finish on time as compared to creative department.
E. The more clients a marketing firm serves, the less satisfactory its creative work is.
Reject: It can be argued that the satisfactory level is saturated after certain number of clients. After this threshold number, more clients a market firm server, the satisfactory level remain same.