The correct answer is option 1: National Wealth. National wealth refers to the total stock of assets owned by the nationals of a country at a specific point in time. It includes various types of assets such as land, buildings, natural resources, financial investments, and physical possessions.

Option 2, National Resources, refers to the natural resources such as minerals, forests, water, and oil reserves that a country possesses. While national resources contribute to national wealth, they are only a part of it.

Option 3, National Income, represents the total income generated by individuals, businesses, and the government within a country over a specific period, usually a year. National income is different from national wealth, as it measures the flow of income rather than the stock of assets.

Option 4, Per Capita Income, is the average income earned per person in a country. It is calculated by dividing the total national income by the population. Per capita income is an indicator of the average standard of living in a country, but it does not directly represent the stock of commodities held by the nationals.

Therefore, option 1, National Wealth, is the correct answer as it accurately represents the stock of commodities held by the nationals of a country.