How could I go about answering the multiple choice question below?All of the following were sources of disappointment to the Europeans who arrived...

I think that if you have a textbook or some type of course
syllabus from which you are operating, you might want to consult this first.  If you
have been privy to lectures and discussions in class that reflect what your instructor
would like you to believe about specific topics, this might be good, as well.  In my
mind, I see a couple of issues in your question.  The first is the elimination of “bad
answers” in the multiple choice question.  I don’t think that the Age of Exploration was
met with disappointment at indigenous cultures that were diverse and thriving.  I think
that European explorers found them to be a “non-issue.”  Many European explorers and the
nations they represented sought to plant their flag in these new nations and whether or
not cultural presence was thriving seemed to be moot.  I also don’t see Europeans as
disappointed in the resistance to conversion to Christianity.  Similar to above, I don’t
think that it mattered to the Europeans.  For those who believed in Christianity and in
bringing it to all parts of the world, there was simply no issue as to the spreading of
Christianity and the need to ensure that wherever Europeans went, the religious banner
of Christianity was waved tall and proud.  I am not sure “disappointment” figures into
such a calculus.  I certainly don’t think that Asian civilization’ lack of wealth and
material prosperity mattered, also.  European explorers already perceived the new world
to be “inferior” to a great extent, and the lack of wealth simply made it easier to
overtake them.  Disappointment doesn’t seem to enter here, also.  This leaves two
options.  The Europeans might have been small in numbers, but I don’t think they were
disappointed in this as their introduction to the New World was facilitated with the
presence of “guns, germs, and steel,” elements of Imperialism that made conquest quite
easy.  This leaves the first option as meeting the criteria of “disappointment,” in my
mind because the need to increase and diversify trade routes ended up becoming some of
the major justification behind new world exploration.