Final answer:
A decrease in supply would create a new equilibrium at point H.
Step-by-step explanation:
In economics, if the market is initially in equilibrium, a decrease in supply would create a new equilibrium at point H.
An increase in supply would shift the supply curve to the right, resulting in a new equilibrium with a lower price and a higher quantity.
In contrast, a decrease in supply would shift the supply curve to the left, leading to a new equilibrium with a higher price and a lower quantity.