An automobile maker procures gears for its motorcar engine directly from a supplier that manufactures them. What is the core value-added activity of the gear supplier for the automobile maker?

Maintenance refers to the ongoing support and upkeep of machinery and equipment. While important, it is not a core activity of the gear supplier, whose primary role is to manufacture gears rather than maintain them. Therefore, maintenance does not contribute directly to the value offered to the automobile maker.

Repairs involve fixing broken or malfunctioning parts of the automobile. Similar to maintenance, this is not an activity that the gear supplier performs. The supplier's role is focused on the initial production of gears, not the repair or rectification of existing components, making this option irrelevant in this context.

Audits are systematic evaluations of processes and compliance, often conducted to ensure quality standards. While audits may be necessary for quality assurance, they do not represent a value-added activity performed by the gear supplier in relation to the automobile maker. This function is more aligned with regulatory or organizational oversight rather than direct production.