A man that supports a fake ideology .
The purpose of the semicolon in the example is to join <span>two related independent clauses (option B)
In this case, the semicolon is used instead of a conjunction. They are generally related however, the second part might not be an explanation or clarification.
the semicolon could have been replaced by BECAUSE perfectly well.
- </span><span>Leticia has to leave early this afternoon because she has a doctor's appointment.</span>
The inevitability of death. (Apex)
You could write about 2 detectives that start investigating a new case on serial killer. And in the end one of the detectives finds out that his/her partner was the serial killer that they were trying to find.