Question

Productivity is _____. an economic measure of the amount of output (revenue, sales, profit) resulting from a measure of input (land, labor, capital) the ability to accomplish certain economic tasks (production) using less resources the central economic measure that determines the gross domestic product (GDP) all of the above

Answer 1

Productivity is an economic measure of the amount of output (revenue, sales, profit) resulting from a measure of input (land, labor, capital). 
It is a measure of the amount of output produced by a given amount of inputs in a specific period of time.