Answer: Workload
Explanation:
The workload approach is one of the type of method that set the size of the sales force and also helps to reduce the complexity.
- It higher the volume of the products for establish the practice between the customers and manufacturing the products.
- The workload approach mainly focus on the various types of management issue such as marketing communication, market sharing goals and the pricing and the investment.
Therefore, Workload approach is the correct answer.