Pedro has written a weak thesis statement for his paper. Which of
the following can replace sentence 2 and serve as a more
effective thesis for this paper?

Australians are generally known for their willingness to embark on
daring adventures, and young Australians are no exception.
Although only sixteen years of age, Jessica made this incredible
journey completely unassisted, armed with only her personal skill and
knowledge.
Because of its obvious challenges and dangers, such a trip is not often
taken by someone only sixteen years old, as Jessica was.
She may not have done so if not for her very unusual upbringing.
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