I have searched many websites to find the answer with an explanation, but I couldn't find evidence to support the answer. So maybe you might want to find info too if you can. From what I have found, I believe your answer would be D, Inviting members of the community to social events.
The answer that best completes the statement above is the first option. During the Great Purge at "Show" Trials, the suspects are often asked to admit to crimes which they could not have possibly done. When we say show trial, this is the kind of judgment done wherein it is influenced by the opinion of the public rather than giving justice itself.
B is the answer, Gay and or lesbian employees where not to be prosecuted.
-procklown