Concept:Net National Product (NNP) is the total value of a country's final goods and services after allowing for capital consumption.Explanation:Start from Gross National Product (GNP).From this total, deduct the value of assets worn out during production, called depreciation or capital consumption allowance.The result is Net National Product (NNP).Therefore, NNP=GNP−depreciation.So the correct deduction is depreciation from GNP.Answer:D. depreciation from GNP