To study the behaviour of producer economist has developed the theory of supply.
Suppply refers to the qty supplied of a commodity that a producer is qilling to sell at a given period of time at a particular price
Supply refers to quantity of a commodity that a firm is willing and able to offer for sale at a given price during a given period of time. ☺️ ☺️ ☺️
Supply refers to the amount of a good or service that the producers/providers are willing and able to offer to the market at various prices during a period of time. There are two important aspects of supply:\tSupply refers to what is offered for sale and not what is finally sold.\tSupply is a flow. Hence, it is a certain quantity per day or week or month, etc.

\tSupply refers to the quantity of a commodity that a firm is willing and able to offer for sale, at each possible price during a given period of time.\t In other words, supply is that part of stock which is actually brought into the market for sale. Stock can never be less than supply.\tFor example, a seller has a stock of 50 tonnes of sugar in the go down. If the seller is willing to sell 30 tonnes at a price of Rs. 37 per kg, then supply of 30 tonnes is a part of total stock of 50 tonnes.