An agnostic is a person who...

The correct answer is Option (4) → Is not sure about God's existence

An agnostic is a person who believes that it is not possible to know whether God exists. He neither believes nor disbelieves. He is not sure about God's existence.
Example: He is an agnostic. He says no one can prove or disprove the existence of God.

Why the Other Options are Incorrect?

Option 1: Does not believe that God exists — Incorrect. This describes an atheist, who is certain that there is no God.
Example: As an atheist, she does not take part in religious rituals.

Option 2: Leads an austere life — Incorrect. A person who lives a very simple life, giving up comforts, is an ascetic.
Example: The ascetic lived in a cave and ate only fruit.

Option 3: Is sure about God's existence — Incorrect. One who firmly believes in God is a theist or believer, the opposite of an agnostic.
Example: A theist believes that God created the world.

Contrast: an agnostic is not sure whether God exists. An atheist is sure that God does not exist.

 

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