The reason that AIM chose Wounded Knee for the protest is that it has been the site of massacre of Native Americans in the year 1890.
Option B is correct.
AIM stands for American Indian Movement which as formed in the year 1968 with a motive of make betterment in the standard of living for the Native Americans.
Wounded Knee Massacre being used as the protest by AIM followers in the year 1890. It was one of the site being takeover by Native Americans along with Mount Rushmore.
Therefore, the reason described in Option B is correct.
Learn more about the AIM in the related link:
https://brainly.com/question/13998244
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