Which one of the following prefixes meaning 'all' best suits the word 'scient'?
a. supra-
b. super-
c. sur-
d. omni-
Answer Options:

The correct answer is Option A (Only d).

Key Points:
• This question tests knowledge of root words and prefixes, specifically Latin prefixes denoting quantity or extent.
• Option 1 is correct. The prefix 'omni-' is derived from Latin meaning 'all'. When attached to the root word 'scient' (meaning knowing, from Latin *scire* to know), it forms the word 'omniscient', which means all-knowing (having infinite awareness or understanding). This accurately aligns with the prefix meaning 'all'.
• 'Supra-' means above or beyond (e.g., supranational). 'Super-' means above or over (e.g., supernatural). 'Sur-' is a variant of super, meaning over or above (e.g., surface, surcharge). None of these carry the explicit meaning of 'all', nor do they form recognized English words with 'scient'.
• Remembering common Latin and Greek roots (omni = all, pre = before, post = after) significantly boosts vocabulary scores.
• Key Takeaway: Remember: 'Omni' means 'all' (e.g., omniscient = all-knowing; omnipotent = all-powerful; omnipresent = present everywhere).