Answer:
D) inventory
Explanation:
It is called inventory,( as the sugar , corn wheat , oats, rice and barley are direct materials not processed they are termed as inventory).
Choice D is the correct answer .
Choice A is not correct because throughput means output of something after processing .
Information system means systems relating to or showing information.
The sugar , corn wheat , oats, rice and barley are the raw direct materials used in the production of the cereals.