Final answer:
The process being used for production when production runs are short and machines are frequently changed to make different products is called job production.
Step-by-step explanation:
In the context of production, when production runs are short and machines are frequently changed to make different products, the process being used is called job production.
Job production is a form of manufacturing where products are made in small quantities, usually to meet specific customer requirements. This process involves setting up the machines for each unique product and changing them frequently to accommodate different products.
For example, a furniture manufacturer that produces custom-made furniture pieces would employ job production as they would create each piece according to customer specifications, requiring frequent changes in machines and production processes.