The correct answer is A) (1) All Work Centers.
Capacity Requirements Planning (CRP) is a capacity planning activity that operates at the level of all work centers. It involves analyzing the production requirements and the available capacity at each work center to ensure that there is sufficient capacity to meet the production demand. By considering the workload and capacity constraints of all work centers, CRP helps in identifying any potential capacity bottlenecks and making appropriate adjustments to meet the production requirements efficiently.