Which prefix indicates 'back, again'?

Which prefix indicates 'back, again'?

• A. Post
• B. Re
• C. Retro
• D. Para

Answer: (B)

The concept here is how prefixes change meaning, especially when they imply moving back or repeating something. The prefix re- means again or back to a previous state. It’s used across many words to show repetition or restoration, like redo, rewrite, or return (going back to an earlier condition). That direct sense of doing something again or returning fits the idea of “back, again” very neatly. Other prefixes shift the emphasis differently: post- means after in time, not repeating; retro- means backward or behind, which is about direction or movement in the past or space, but is more specific to backward motion rather than simply repeating; para- means beside or abnormal, not about repetition or reversal. So re- is the best fit for the general sense of “back, again.”

The concept here is how prefixes change meaning, especially when they imply moving back or repeating something. The prefix re- means again or back to a previous state. It’s used across many words to show repetition or restoration, like redo, rewrite, or return (going back to an earlier condition). That direct sense of doing something again or returning fits the idea of “back, again” very neatly.

Other prefixes shift the emphasis differently: post- means after in time, not repeating; retro- means backward or behind, which is about direction or movement in the past or space, but is more specific to backward motion rather than simply repeating; para- means beside or abnormal, not about repetition or reversal. So re- is the best fit for the general sense of “back, again.”