Answer:
Explanation:mm
a.When the price level changes
Both the demand and supply curve shifts.
The demand curve shifts upward and supplies curve shifts in a downward direction.
Aggregate output decreases.
Price level increases.
b.When consumer confidence declines
Both curves shift downwards.
Aggregate output decreases.
Price level decreases.
c.When the supply of resources increases
Only the supply curve shifts in an upward direction.
Aggregate output increases.
The price level decreases.
d.When the wage rate increases
Only the supply curve shifts in a downward direction.
Aggregate output decreases
The price level increases.