Answer:
Classification of events as Shifting the Aggregate Demand Curve or Causing Movement along the Curve:
a. = shifting the aggregate demand curve.
b. = causing movement along the demand curve.
Explanation:
When technological advances generate wealth in a broad range of industries, the movement along the demand curve denotes a change in both price and quantity demanded. This is obtainable because technological advances usually reduce costs of production and prices. The reduced price can increase demand. On the other hand, inflation that drops to nearly zero will cause a shift in a demand curve because the quantity demanded can increase with the price of the good remaining the same.