Final answer:
Without access to paragraph 12 in the text, we cannot determine the specific subject of the disagreement among the characters in the story.
Step-by-step explanation:
The information provided does not contain a paragraph 12, therefore we cannot determine what the characters disagree about.
Without the content of paragraph 12, it is not possible to specifically identify whether the disagreement is about the best part of the trip, where they are located, where they should go next, or whether to land near a town.
However, based on the available excerpts, we can infer that the characters may have been on a journey or exploration, possibly deciding on logistics related to their travels and destinations, as highlighted by the act of naming land and contemplating the environment.