Introduction:
The law of supply states that other things remaining equal, the higher the price of a commodity, the larger the quantity of the commodity supplied to the market. In contrast, the lower the price of a commodity, the smaller the quantity of the commodity supplied to the market.

Explanation:
The cost of production is one of the factors that influence the supply of a commodity in the market. When the cost of production of a commodity is low, the following things happen:

1. Profitability: The producers will be able to make a reasonable profit even if they sell the commodity at a lower price because the cost of production is low.

2. Increased supply: Since the producers are making a profit at a lower price, they will be motivated to supply more of the commodity to the market.

3. Competition: If the cost of production is low, more producers may be attracted to the market, leading to increased competition. This competition will result in increased supply to the market.

4. Efficiency: When the cost of production is low, producers are likely to adopt more efficient production methods. This increased efficiency will also result in increased supply to the market.

Conclusion:
Therefore, other things remaining equal, when the cost of production is lower, the quantity of a commodity supplied to the market will be higher. This is because producers will be making a profit even if they sell the commodity at a lower price, leading to increased supply to the market. Increased competition and efficiency will also lead to increased supply.