ANS:A - sequence of operation to be performed.

Routing in production planning and control is concerned with the sequence of operations to be performed. Explanation:

1. Sequence of Operations: Routing involves determining the optimal sequence in which manufacturing operations should be performed on a workpiece. This includes identifying the specific operations, such as machining, assembly, or inspection, that need to be carried out and determining the order in which they should occur.
2. Optimization: The goal of routing is to optimize the manufacturing process by defining the most efficient sequence of operations. This involves considering factors such as minimizing setup times, reducing material handling, and maximizing machine utilization.
3. Routing Sheet: The output of routing is often represented in a routing sheet or route card, which provides detailed instructions for the sequence of operations, including machine assignments, tooling requirements, and processing times.
4. Integration with Other Functions: Routing is closely integrated with other functions in production planning and control, such as scheduling and dispatching. The routing information serves as input for scheduling activities to allocate resources and establish production timelines.
5. Progress Monitoring: While routing primarily focuses on determining the sequence of operations, monitoring the progress of work performed is typically the responsibility of other functions such as scheduling and production control.