Concept:Gross National Product (GNP) is obtained by adding net factor income from abroad to the domestic product.Explanation:The formula is:GNP=GDP+Net Factor Income from AbroadSubstitute the given values:GNP=$2800+$250GNP=$3050Depreciation and indirect taxes are not used in this calculation.Answer:GNP=$3050Therefore, the correct option is D. $3,050.