Rossi: It is undemocratic for people to live under a government in which their interests are not represented.
Conclusion (so)
Children should have the right to vote.
Evidence (since)
Children's interests are sometimes different from their parents', It is undemocratic for people to live under a government in which their interests are not represented".
Evaluate
Does this look like any of the Big 3 moves in Method (analogies, faulty implications, or alternatives)? No, not really.
How else could we describe it? The author points out a problem and then prescribes a solution. It calls out an undemocratic state of affairs and then makes a recommendation.
Goal
Find any answer that says a true description of Rossi's argument.