50 POINTS WILL GIVE BRAINLIEST: Which factor does productivity measure within an economy?

the number of people who are gainfully employed

the amount of specialization within an industry

the level of efficiency with which resources are used

the amount of products produced by factories

NEED HELP ASAP

answer:Productivity, in economics, measures output per unit of input, such as labor, capital or any other resource – and is typically calculated for the economy as a whole, as a ratio of gross domestic product (GDP) to hours worked. hope kit helps in someway ig idk

Explanation:

world war i had a devastating effect on german-americans and their cultural heritage. up until that point   german-americans, as a group, had been spared much of the discrimination, abuse, rejection, collective mistrust experienced by so many different racial and ethnic groups in the history of the united states. indeed, over the years, they had been viewed as a well integrated and esteemed part of american society. all of this change with the outbreak of war.