Final answer:
The Operations area of business deals with warranty repairs, managing quality assurance, production processes, and after-sales services to maintain product reliability and customer satisfaction.
Step-by-step explanation:
The area of business that is primarily concerned with addressing warranty repairs is Operations. Warranty repairs involve the process of ensuring that products operate as promised and addressing any defects or issues according to warranty terms. This falls under the operations function, as it involves managing the supply chain, quality assurance, production processes, and after-sales services which are fundamental to product reliability and customer satisfaction.