A stable income
A stable job
Legally owning property
Possibly a family
Good health
I would assume, the best way to measure if it's achievable would be making a graph of various ages and seeing when most people achieve these indicators and how many do it.
Elie's will to survive for him and his father.
The answer to this would be B, Hot, heavy air and jungle vegetation complicate the race.
There is supporting detail in this sentence and a plot.
Hope I helped.
-Davismr00.