Answer:
a. rightward shift of aggregate demand and a rightward shift of aggregate supply.
Step-by-step explanation:
Aggregate demand is the sum of four components which are consumption spending on goods and services, investment, government spending on public services, and net exports (difference between exports and imports). A shift to the right of the average demand curve signifies a strong economic growth. An increase in consumer spending can cause the average demand curve to shift to the right,
Productivity growth causes shift in the average supply curve. Positive economic growth is therefore represented by a shift to the right of aggregate supply.