Choice "D" is correct. Of the items listed, accounts payable would be the most impacted by the use of the percentage of sales forecasting method for budgeting purposes. If sales increased or decreased, purchases would presumably increase or decrease, by whatever percentage was being used in the budgeting process. If purchases increased or decreased, accounts payable would presumably increase or decrease by approximately the same percentage. The other items listed have no relationship at all to sales and would thus not be affected by the method used to forecast sales.Choice "b" is incorrect. Mortgages have no relationship to sales and mortgages payable would not be affected by the method used to forecast sales.Choice "a" is incorrect. Bonds have no relationship to sales and bonds payable would not be affected by the method used to forecast sales. Mortgages and bonds are just alternate forms of debt.Choice "c" is incorrect. Common stock has no relationship to sales and would not be affected by the method used to forecast sales.