Which prefix means 'apart'?

• A. Inter-
• B. Con-
• C. Se-
• D. De-

Answer: (C)

Se- signals separation or moving away from something. It shows that the action is to set apart or isolate, which is exactly what “apart” means. You can see this in words like separate, seclude, or segregate, where the happening is to create a gap or a boundary between things. In contrast, inter- means between or among, which is about relationships across rather than breaking apart; con- means with or together, which emphasizes connection; de- often means reverse or removal in a broader sense, which isn’t specifically about moving apart. So the prefix that conveys the idea of apart is se-.