Which of the following equals aggregate demand in an open economy?

In an open economy, which is an economy that trades goods and services with other countries, aggregate demand is the total demand for all the goods and services produced. It's like the total amount of money that everyone in the country is willing to spend on things.

Aggregate demand in an open economy is calculated by adding up four things:

1. Consumer spending: This is the money that individuals and families spend on things like food, clothes, and entertainment. It's like the money you might spend at the mall or the movies.

2. Investment: This is the money that businesses spend on things like machinery, buildings, and technology to help them produce more goods and services. It's like a bakery buying a new oven to bake more bread.

3. Government spending: This is the money that the government spends on things like roads, schools, and the military. It's like the money your city might spend to build a new park.

4. Net exports: This is the value of the goods and services a country sells to other countries (exports) minus the value of the goods and services it buys from other countries (imports). If a country sells more than it buys, net exports are positive. If it buys more than it sells, net exports are negative. It's like if you sold some of your old toys at a garage sale and used the money to buy new toys.

So, to answer your question, aggregate demand in an open economy equals consumer spending plus investment plus government spending plus net exports.