The proposed coal-burning electric plant should be approved, since no good arguments have been offered against it. After all, all the arguments against it have been presented by competing electricity producers. Which one of the following is an assumption on which the reasoning above depends? ['If good arguments are presented for a proposal, then that proposal should be approved.', 'The competing electricity producers would stand to lose large amounts of revenue from the building of the coal-burning electric plant.', 'Arguments made by those who have a vested interest in the outcome of a proposal are not good arguments.', 'Approval of the coal-burning electric plant would please coal suppliers more than disapproval would please suppliers of fuel to the competing electricity producers.']