Answer:
C) more workers are willing to work as the market wage increases.
Explanation:
As we see in the question that there is an increase in upward sloping of labor supply curve that means more and more workers are ready or willing to work in that case where the wages of the market increased
Therefore according to the options, the option C is correct as it mets the current situation and the same is to be considered
Hence, all other options are incorrect
