Answer:
d. inventory
Step-by-step explanation:
Companies can either provide services (such as financial services, consultancy services, and so on), or engage in manufacturing and sales of products.
Bother of these types of companies must account for revenue, losses, and operating expenses.
However the feature unique to manufacturing and sales companies is that they must also account for inventory.
When products are manufactured they must be stored before being shipped out to middle men or consumers.
Companies that sell goods must also receive goods that will be stored as inventory for.the period it takes to sell the product to customers after which inventory is restocked.