Final answer:
If there are diminishing returns to labor, then as more workers are hired, the total amount produced by all of the workers will decrease.
Step-by-step explanation:
The correct answer is a. True. When there are diminishing returns to labor, as more workers are hired, the total amount produced by all of the workers will decrease. Diminishing returns occur because of fixed capital, which means that at some point, adding more labor will no longer increase output, and may even lead to a decrease in output.