One who knows everything is-

A Omnipotent

B Omnivorous

C Omniscient

D Omnipresent

Correct Answer: Option C

-Omniscient (সর্বোজ্ঞ):One who knows or sees everything

-Omnipotent (সর্বশক্তিমান):One who is all powerful

-Omnnivorous (সর্বভুক):One who eats everything

-Omnipresent (সর্বব্যাপী):One who presents everywhere