Answer: Option (D) is correct.
Step-by-step explanation:
Correct: D.increased labor supply.
A. If there is a technological advancement, this will lead to increase the labor productivity. Now, workers are able to use new machines with high tech technology, so this will increase the labor effectiveness. Thus, this will increase the productivity of workers'.
B. If there is an increase in the capital formation means that there is increase in the stock of real capital which help labors to produce more.Thus, this will increase the productivity of workers'.
C. If there is an improvement in the worker's skill, then this will increase their productivity as they are now more capable to produce high tech products in a very efficient manner.Thus, this will increase the productivity of workers'.
D. There is no relationship between the workers' productivity and the labor supply. Thus, this will not contribute towards the productivity of the workers'.