Atonement for one's sins
A. Redemption
B. Repentance
C. Salvation
D. Expiation
Answer: Option D
Solution (By Examveda Team)
One word substitute is Expiation.Redemption: the action of saving or being saved from sin, error, or evil.
Repentance: the action of repenting; sincere regret or remorse.
Salvation: preservation or deliverance from harm, ruin, or loss.
Expiation: the act of making amends or reparation for guilt or wrongdoing; atonement.

Expiation is correct answer