Which of these is likely to detail available inventory?

The answer is the choice that is most likely to detail available inventory because product activity data typically includes information about stock levels, historical sales, and movement of inventory items. This type of data provides insights into how much inventory is available at any given time, helping businesses understand their stock status and make informed decisions about restocking and managing their inventory levels. Product activity data facilitates tracking and analysis, which is crucial for efficient inventory management.

In contrast, while membership, invoices, and purchase orders contain valuable information, they do not directly provide a real-time overview of available inventory. Membership data relates more to customer loyalty or access, invoices usually reflect transactional details rather than current stock, and purchase orders represent planned acquisitions rather than existing inventory levels. Thus, product activity data stands out as the primary source for understanding available inventory.