Since the function in question is a linear one, the integral may be calculated by using the areas of triangles and squares. For –3≤x≤0, let A1 denote the area of the triangle above the x-axis and under the graph. In the interval [0, 2], the area is denoted by A2, and for 2≤x≤4, the area under the graph is denoted by A3. Then the definite integral is found as 

Therefore the correct answer is the D option.