Since, Newman Inc. is manufacturing saddles for horses that race in derbies in the U.S. and the UK. Within this context the firm is exhibiting the role of a job-shop specialist. So, (d) is correct option.
A job shop is indeed a small firm or enterprise that produces unique goods for one client at a time. It is a production facility that specializes in producing unique or customized parts in small batches. The department creates each specific product for the client, or it creates customized products. It focuses on personalization.
Job shops are primarily modest manufacturing systems that manage order to function successfully, which includes small- to medium-sized customer requests or batch jobs as well as tradition or quasi manufacturing processes. When a work is finished, job shops often go to another one (possibly with a different customer).
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