Labor demand is less elastic when: a. the demand for output is more elastic.
b. a large amount of labor is essential to the production process.
c. there are many substitutes for labor in the production process.
d. the inputs that could be substituted for labor are relatively inexpensive.

The correct answer is B. Labor demand is less elastic when a large amount of labor is essential to the production process.

Explanation:

Inelastic demand is one that is not very sensitive to sudden changes in its quantity, even in the face of important changes in the context in which they operate, such as a change in the price if it is a product for sale, or in the working conditions or wages if you talk about labor demand.

Thus, in the case of a job in which high amounts of labor are needed, the labor demand will remain stable despite these changes, as workers will perceive that it is a position of easy access and hiring.

the answer would be voluntary exchange -

"the act of buyers and sellers freely and willingly engaging in market transactions. moreover, transactions are made in such a way that both the buyer and the seller are better off after the exchange than before it occurred."

hope this : )

-shy

i guess you could put raise the economic balance