Explanation:

- GNP: Gross National Product, measures total economic output of a nation, including income from abroad.

- Depreciation Allowances: Also known as capital consumption allowances; the cost of the wear and tear on the nation’s capital goods.

- National Income: Total of all forms of income earned by a nation's citizens and businesses.

- NDP: Net Domestic Product, which is GDP minus depreciation.

- NNP: Net National Product, calculated as GNP minus depreciation, representing the net economic value.

- GNP - Depreciation = NNP as it accounts for the total national income accounting for wear and tear.

NNP is the correct choice.