An increase in the supply of a commodity is caused by

The correct answer is: D. All of the above

An increase in the supply of a commodity is caused by a number of factors, including:

• Improvements in technology: New technologies can make it cheaper and easier to produce a commodity, which can lead to an increase in supply. For example, the development of new fracking techniques has led to a significant increase in the supply of natural gas.
• Fall in the prices of other commodities: If the prices of other commodities fall, producers may switch to producing the commodity in question, which can lead to an increase in supply. For example, if the price of oil falls, producers may switch to producing natural gas, which can lead to an increase in the supply of natural gas.
• Fall in the prices of factors of production: If the prices of factors of production fall, such as labor or land, the cost of producing a commodity will fall, which can lead to an increase in supply. For example, if the price of labor falls, producers may be able to produce a
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