Final answer:
The discovery of very large gold deposits in the world would lead to an increase in supply, resulting in a decrease in the equilibrium price of gold and an increase in the quantity bought and sold.
Step-by-step explanation:
When there is a discovery of very large gold deposits in parts of the world, it would lead to an increase in supply in the market for gold. As a result, the market equilibrium would be affected. The increase in supply would lead to a decrease in the equilibrium price of gold, as there is a larger quantity of gold available. Additionally, the equilibrium quantity bought and sold would also increase, as there is more supply available in the market.