Which trait is most shown by cecily and gwendolen in this excerpt

Which sentence has a correct verb form in the subjunctive mood? a. i insist that the town stop using that dangerous product to kill mosquitoes. b. i demand that the town use a less dangerous means of killing them. c. if i was a mayor, i would pass a law against that dangerous product. d. if my cousin was at today’s town meeting, she would agree.