Answer:
This will create shortage and people will sell milk in black market at higher price.
Explanation:
Wildfires and mudslides have closed the highways. This created greater demand and short supply.
The equilibrium price increased to $7.
But the government imposed a price ceiling of $4.
At this binding price ceiling, the quantity demanded is more than quantity supplied.
This high demand would cause the suppliers to sell milk in the black market at a higher price.