In economic terms, which of the following is categorized as inventory investment?

Inventory investment refers specifically to the stock of goods that businesses hold for the purpose of selling in the normal course of operations. This includes raw materials, work-in-progress items, and finished goods that are ready for sale. In this context, finished goods held for sale are the products that a business has completed and is prepared to sell to customers. As such, this type of inventory represents a critical component of a company's resources, influencing its sales and production strategies.

Day-to-day consumables and retail products might not be classified as inventory investment in the same sense since consumables are typically used immediately and retail products can encompass a broader category of items, not all of which qualify as inventory in an economic framework. Capital assets, on the other hand, refer to long-term assets used to produce goods or services and are not typically included in inventory investment as they are not held for immediate sale.