Why are imported final goods subtracted in GDP accounting and how does this relate to welfare?

Correct answer: Because they are not domestic production although they may raise domestic consumption welfare

GDP measures production within domestic territory, not every good purchased by domestic residents. In the expenditure identity, imports are subtracted from consumption, investment, and government spending because those expenditures may include foreign production. Imported final goods can still increase consumer utility and living standards, so option C correctly separates the production boundary of GDP from consumption welfare.