Final answer:
Rotating stock to use the oldest supplies first is called FIFO (First In, First Out), a method ensuring that the earliest stock purchased or made is used or sold first.
Step-by-step explanation:
Rotating stock to ensure using the oldest supplies first is known as FIFO (First In, First Out). This inventory management technique ensures that items purchased or manufactured first are the ones used or sold first, preventing old stock from becoming obsolete or expired. It's commonly used in businesses where products have a limited shelf life, such as food, or where item value can deteriorate over time, like in technology sectors.
Contrary to FIFO, LIFO (Last In, First Out) is a method where the most recent products added to the inventory are the ones used or sold first. However, LIFO is not suitable for perishable goods as it can lead to older items expiring. FEFO (First Expired, First Out) is a slight variation often used in industries dealing with products that have expiration dates, focusing on using items that are closest to expiring regardless of when they were acquired.
The option d) ABC (Always Be Consistent) is not a recognized inventory management technique.