Answer:
The correct answer would be B, Demand.
Step-by-step explanation:
Demand is a basic concept in the field of economics. In simple words, when people want something so much that they are willing to pay a price for that, it is called as Demand. In economic terms, Demand is the quantity of a product that consumers are willing to purchase at a certain price during a period of time, and also they are able to pay for that product. There is a direct relationship of the product demanded and the price of that product. When demand for a certain product increases, the price of that product also increases and vice versa. The concepts of supply, demand, price are interrelated, either directly or indirectly.