Answer to Question 1
C
Answer to Question 2
The non-occurrence of an anticipated tax cut has the same effect as an unanticipated tax increase: the aggregate demand curve shifts to the left. As output falls below potential and inflation falls, the decrease in expected inflation increases aggregate supply, so output begins to recover and inflation falls further. Eventually, output returns to potential. Aggregate demand may or may not shift back to the right, depending on the response of monetary policy to the lower inflation rate.