Answer: B.) productivity at the work site has increased.
Explanation: The considerable increase in output at the work site while still maintaining the same number of workers and hours worked over the last six months shows that the productivity at the work site has increased. Productivity which is usually compares unit output to the rate of inout per unit. The effectiveness of the input or production effort is used to measure the degree of productivity. Therefore, when the output derived by maintiaing the same unit of input increases, then productivity has increased. If it decreases, then productivity has decreased.