which of the following best describes the aggregate demand curve? responses it is a curve that shows the relationship between consumer spending and income. it is a curve that shows the relationship between consumer spending and income. it is a curve that shows the amount of goods and services domestic consumers will buy from domestic and foreign firms. it is a curve that shows the amount of goods and services domestic consumers will buy from domestic and foreign firms. it is a curve that shows the level of spending by consumers, businesses, the government, and the foreign sector at different price levels. it is a curve that shows the level of spending by consumers, businesses, the government, and the foreign sector at different price levels. it is a curve that shows only the level of government spending at different price levels. it is a curve that shows only the level of government spending at different price levels. it is a curve that shows the level of spending by all factors of production at different price levels.