Explanation:

- GDP (Gross Domestic Product) measures the total economic output within a country's borders.

- GNP (Gross National Product) takes the total economic output of a country's residents, including income from abroad.

- Net Factor Income from Abroad is the difference between the income residents earn abroad and income foreigners earn within the country.

Here’s a breakdown of the options:

- Option 1: GDP < GNP: This suggests that net factor income from abroad is positive, not negative.

- Option 2: GDP > GNP: This happens when the net factor income from abroad is negative.

- Option 3: GDP = GNP: This could include scenarios where GDP is either greater or equal but not strictly applicable with a negative net factor income.

- Option 4: GDP = GNP: This means no net factor income, zero difference between GDP and GNP.