Sometimes. If the sentence is two independent clauses then they would need either a period or a semicolon. A comma would be used if you had an independent and dependent clause.
The answer that i think best fits your question is c - a metaphor
His reputation would be ruined, he was a reverend keep that in mind. btw I CAME OUT IN THE CRUCIBLE AS ABIGAIL ADAMS IN MY FALL PRODUCTION LAST YEAR!!!
Situational irony. Jeremy's test was on time management, which he wasn't displaying as he was cramming.