A proposed amendment would allow the city council to decide that certain city elections be conducted solely by mail. But voting is a sacred right in democracies, one that has always been exercised by voting in person and not by mail. Therefore, voting by mail should not be allowed, and the proposed amendment should be rejected. The reasoning in the argument is most vulnerable to criticism on the grounds that the argumentThe argument rejects voting by mail because voting has traditionally been done in person.
The flaw is treating tradition itself as a sufficient reason to reject a change, without showing that voting by mail would actually harm the right to vote or make elections worse.
(A) presumes, without providing justification, that the right to vote is not violated unless elections are conducted solely by mail
This is not the flaw. The argument does not say when the right to vote is or is not violated.
(B) presumes, without providing justification, that if citizens have always had a certain legal right, they will continue to have that right in the future
This is not the issue. The argument is not predicting that a legal right will continue; it is arguing that voting by mail should be rejected because voting has traditionally been done in person.
(C) presents an appeal to tradition as the only reason for rejecting the proposal
This is correct. The argument’s only real support is that voting has always been exercised in person and not by mail. But the fact that something has traditionally been done one way does not prove that a different method is unacceptable.
(D) fails to consider the possibility that, even if it gains the power to do so, the city council might never require voting by mail
This is not the main flaw. The argument objects to allowing voting by mail at all, so whether the council would actually use that power is secondary.
(E) has a premise that is logically incompatible with the main conclusion
This is incorrect. The premise and conclusion are not logically incompatible; the problem is that the premise gives weak support for the conclusion.
Answer: (C)