Answer:
Statement 1: An increase in the cost of energy affects both aggregate supply and aggregate demand.
An increase in energy costs reduces both aggregate supply and demand.
Statement 2: One of the factors that increase aggregate demand is the consumption of more imports.
If net exports decrease (exports - imports), then the aggregate demand curve will shift to the left, which means it will decrease.
Statement 3: If the value of people's stock portfolios increases or if peoples houses appreciate in value, then this very easily could lead to an increase in aggregated demand.
This would lead to an increase in the net worth of households, which generally leads to higher spending.
