Answer:
C. In a process-costing system, each unit uses approximately the same amount of resources.
Explanation:
Option A is wrong because average production cost cannot be calculated for all units produced in a job-costing system. It is calculated from overhead allocation.
Option B is incorrect because overhead cannot be allocated to all units equally in the job costing method.
Option D is also false because, in a job costing system, individual jobs use different quantities of production resources. On the other hand, the process costing system uses the same amount of resources for each unit. Therefore, option C is correct.