Their thoughts can't be hundred percent sure without the diaries but they had thoughts on how much hardship they would have to go through the trip across mountains and rocky paths, they also had to survive with minimal resources, so their thoughts on this was probably brave and rough trip, they had no clue if they were gonna survive or what was gonna happen, they territory was unknown.
1. Most fruit and vegetables are only ready to be harvested at a specific time of the year, mainly Autumn.
2. Helium will eventually run out because the process to create it takes over millions of years.
It would be D because it gives the most background and summary info to the questions
