The correct answer is Credit method. Explanation & Key Takeaways: • Credit method:- • The credit method is a way of avoiding or reducing double taxation. • It works by allowing taxpayers to credit the taxes they have paid in one country against the taxes they owe in another country. • This is especially important for taxpayers who live or work in multiple countries, or who receive income from multiple countries. • The credit method does not constitute a national income measurement method. Related Concepts: • Product method: • This method measures the total value of all final goods and services produced in a country during a given period of time. • It is also known as the value-added method. • Income method: • This method measures the total income earned by all factors of production (land, labor, capital, and entrepreneurship) in a country during a given period of time. • Expenditure method: • This method measures the total expenditure on final goods and services produced in a country during a given period of time.