Answer:
The production possibilities curve would have shifted inwards.
Explanation:
A production possibility curve shows the maximum possible bundles of two goods that can be produced in an economy in a given period. A reduction in the availability of resources causes this curve to shift to the left.
The outbreak of bubonic plague in the 14th century caused the European population to decrease by 30-60%. A decrease in the population implies a decrease in the labor force. This means that the economies will be able to produce less than earlier.
This will cause the production possibilities curve to shift inwards to the left.