Hello I have an economics math equation and have provided the question via image. I need help with

The gure given below depicts the tax revenue for different tax rates applied by the government. Figure 11.2 100 O) 0 Tax Rate (percent) M w J3 U] D D O D a O Tax Revenue Which of the following is depicted in Figure 11.2? 0 a. The community indifference curve 0 b. The Lorenz curve c. The Engel curve 0 Q d. The Laffer curve 0 e. The aggregate labor supply curve