Forgone output is the fundamental economic cost of unemployment. So, output (option (b)) is the right choice.
Forgone labour output is the amount of money that persons would have made over the course of their remaining working lives, discounted to the current year if they had not passed away too soon. Forgone labour production, like other accounting metrics like the Gross Domestic Product (GDP), is not meant to represent a gauge of society's prosperity. This brings us to the welfare-based approach, which is the second method for estimating the costs of premature death.
The potential for the production of goods and services is lost forever when the economy fails to provide enough jobs for everyone who is able and willing to work.
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