The best-supported explicit statement from the passage is: The passengers oppose the candidates chosen by the committee.
This is evident in the way the story describes the voting process and the absurdity surrounding the election, such as Mr. Harris voting against himself and the motion to ratify his election being lost. This satirical depiction suggests a level of discontent and disagreement among the passengers regarding their "candidates."
The other options do not have strong support from the details provided. The passengers' horror at cannibalism is implied through the dark humor but not explicitly stated as a primary reaction. There is no mention of Mr. Rogers or Mr. Herrman, so those statements cannot be supported by the passage.