I apologize for the mistake. The correct answer is "omni-". The prefix "omni-" means all or every.
The prefix that means "all" is "omni-". To determine this, you can break down the word "omniscient", which means having complete or unlimited knowledge. "Omniscient" is derived from the Latin prefix "omni-" which means "all" or "every". Similarly, you can identify other words with the prefix "omni-" such as "omnipotent" (all-powerful), "omnipresent" (present everywhere), and "omnivorous" (eating all kinds of food).
