Final answer:
Protestants in the Skokie Case were not part of any of the options mentioned (a) American Nazi Party, (b) Democratic Party, (c) Republican Party, (d) Communist Party.
Step-by-step explanation:
In the Skokie Case, the protestants were not part of any of the options mentioned (a) American Nazi Party, (b) Democratic Party, (c) Republican Party, (d) Communist Party. The Skokie Case, also known as National Socialist Party of America v. Village of Skokie, involved a controversial legal dispute between the National Socialist Party of America, a neo-Nazi group, and the Village of Skokie, a suburb of Chicago.
The protestants in this case were members of the National Socialist Party of America, which is not mentioned in the options provided.