The complete eradication of poverty from our country is really an illusion.

Answer: Option C

Illusion : an instance of a wrong or misinterpreted perception of a sensory experience.
Truth : the quality or state of being true.
Fact : a thing that is known or proved to be true.
Reality : the state of things as they actually exist, as opposed to an idealistic or notional idea of them.
Actuality : the state of existing in reality.

Antonym of Illusion is Reality