One who does not believe in existence of god

A. Egoist

B. Atheist

C. Stoic

D. Naive

Answer: Option B

Solution(By Examveda Team)

One word substitute is Atheist.

Egoist: a self-centered or selfish person.
Atheist: a person who disbelieves or lacks belief in the existence of God or gods.
Stoic: a person who can endure pain or hardship without showing their feelings or complaining.
Naive: showing a lack of experience, wisdom, or judgement.