Dillworth: More and more people are deciding not to have children because of the personal and economic sacrifices children require and because so often children are ungrateful for the considerable sacrifices their parents do make for them. However, such considerations have no bearing on the fact that their children provide the best chance most people have of ensuring that their values live on after them. Ttherefore, for anyone with deeply held values, foregoing parenthood out of reluctance to make sacrifices for which little gratitude can be expected would probably be a mistake. Travers: Your reasoning ignores another fact that deserves consideration: children' s ingratitude for parental sacrifices usually stems from a wholesale rejection of parental values. Dillworth employs which one of the following argumentative strategies? ['indirectly establishing that a given course of action is obligatory by arguing that the alternative course of action is prohibited', 'showing that considerations cited as drawbacks to a given course of action are not really drawbacks at all', 'distinguishing a category of person for whom the reason presented in favor of a given course of action is more telling than the reasons cited against that course of action', 'using evidence that a certain course of action would be appropriate under one set of conditions to arrive at a general conclusion about what would be appropriate in all cases']