Answer:
a. left, making unemployment higher than otherwise
Step-by-step explanation:
An increase in taxes is a contractionary form of fiscal policy. When taxes are increased, there is usually a decrease in aggregate demand because more taxes will cause a reduction in income which is goes further to cause a reduction in consumption. A rise in taxes will make businesses to lay off workers because there would be less money to pay all workers which makes the unemployment to be higher, thereby shifting aggregate demand inwards that is left of the aggregate demand curve.