GRE Logical Reading: ETS-GRE逻辑单题ETS - _DG0I5ADL11043K5J$

Which of the following, if true, most seriously weakens the argument? A. Between 1988 and 1992, the number of eligible voters in Diersville rose, but not the percentage who actually voted. B. Between 1988 and 1992, Diersville's leading political party revised its platform, adopting a strongly environmentalist stance. C. The parties that ran candidates in the 1992 election in Diersville were the same as those that had done so in the 1988 election. D. In 1992 the Environmental Action party won fewer votes in Diersville than it had won in 1988. E. Between 1988 and 1992, some measures intended to benefit the environment had been adopted by the town council, but with inconclusive results.