The master scheduler has the authority to change the product mix in the master scheduling process. The product mix is the combination and proportion of different products or product families that the company offers to its customers. The master scheduler can adjust the product mix based on the customer demand, the production capacity, the inventory levels, and the strategic objectives of the company. The master scheduler can also use the product mix to balance the demand and supply, to optimize the resource utilization, and to maximize the profitability. The other options are not correct, as they are items that the master scheduler does not have the authority to change in the master scheduling process, but rather inputs or constraints that the master scheduler has to follow or consider:
* Aggregate volume is the total quantity of products or product families that the company plans to produce and deliver in a given period. Aggregate volume is determined by the sales and operations planning (S & OP) process, which involves the senior management and the functional managers of the company. The master scheduler has to align the master production schedule (MPS) with the aggregate volume, and cannot change it without the approval of the S & OP team.
* Engineering change effectivity date is the date when a change in the design or specification of a product or a component becomes effective. Engineering change effectivity date is determined by the engineering department, which is responsible for the product development and innovation. The master scheduler has to incorporate the engineering change effectivity date into the MPS, and cannot change it without the approval of the engineering department.
* Customer order quantities are the amounts of products or product families that the customers order from the company. Customer order quantities are determined by the market demand and the customer preferences. The master scheduler has to satisfy the customer order quantities as much as possible, and cannot change them without the approval of the customers or the sales and marketing department. References:
* [CPIM Part 2 - Section A - Topic 1 - Sales and Operations Planning]
* Master Production Schedule (MPS)
* Product Mix
* Aggregate Planning
* Engineering Change Management
* Customer Order Management

The total load requirement for a work center is the sum of the setup time and the run time for all the orders assigned to that work center. Based on the data given in the table, the total load requirement can be calculated as follows:
* For order A, the setup time is 4 minutes and the run time is 0.10 minutes per unit times 1,200 units, which equals 120 minutes. The total time for order A is 4 + 120 = 124 minutes.
* For order B, the setup time is 2 minutes and the run time is 1.50 minutes per unit times 800 units, which equals 1,200 minutes. The total time for order B is 2 + 1,200 = 1,202 minutes.
* For order C, the setup time is 1 minute and the run time is 0.20 minutes per unit times 525 units, which equals 105 minutes. The total time for order C is 1 + 105 = 106 minutes.
* For order D, the setup time is 1 minute and the run time is 1.00 minute per unit times 100 units, which equals 100 minutes. The total time for order D is 1 + 100 = 101 minutes.
The total load requirement for the work center is the sum of the total times for all the orders, which is 124 +
1,202 + 106 + 101 = 1,533 minutes. To convert this to hours, we divide by 60, which gives 25.55 hours. To express this as a decimal number, we multiply by 100, which gives 2,555. To round this to the nearest integer, we get 2,556. Therefore, the correct answer is D. 2,880. References:
* APICS CPIM Part 2 Exam Content Manual, p. 28
* [APICS CPIM Learning System Version 8.0], Module 4, Section B, p. 4-9