(1) is ungrammatical. (2) is "more grammatical" but still seems unsatisfactory to me. I find "a choice of researching and protecting the natural environment" hard to understand.
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AlpheccaStarsThe exhibition evokes a process of reflection in its viewers; that is, to consider the choice between research and protecting the natural environment.It does not make sense because usually research is fundamental to understanding and devising means to protect the environment. However, there are a few cases where there is a conflict between the interests of sc