✔ 最佳答案
Productivity refers to how fast/efficient the labour can produce. It is affected by some factors such as:
Introduction of machineryDivision of labourThe quality of labouretcOpportunity cost is the cost of giving up something when you choose to do another thing with the resources given. For e.g: You have 3 hours free, you can choose to attend a movie or study. If u choose study, the OC for it is movie.