Explanation:
Graphic location of mode is done with reference to histogram.Mode is a positional average it can be located graphically by the various process. A histogram of the frequency distribution is drawn.In the histogram, the highest rectangle represents the model class.The top left corner of the highest rectangle is joined with the top left corner of the following rectangle and the top right corner of the highest rectangle is joined with the top right corner of the preceding rectangle respectively.Hence, the correct option is (D).