Answer:
Cost of Raw Material.
Step-by-step explanation:
For majority of companies, the most common increase in the cost of production results from rising cost of Raw Material. In the production process, raw material is used to make products. Other factors like labor cost, operating costs, etc are also involved, but the increase in the production cost is usually due to the increase in the cost of Raw Materials. Labor cost and other operating costs do not increase drastically and they don't impact the production cost. Raw Material is the only thing which can increase the cost of Production.