Answer:
The correct answer is option a.
Step-by-step explanation:
Suppose half of the crop of oranges is destroyed due to hard freeze. This will cause a decrease in the supply of oranges. The supply curve for oranges will shift to the left. This leftward shift in the supply will lead to an increase in price level and a decrease in equilibrium quantity.
A favorable change in weather would have contributed to an increase in supply, causing the price level to fall.