To atone for one's sins

A. Apologise

B. Ingratiate

C. Expiate

D. Propitiate

Answer: Option C

Solution(By Examveda Team)

One word substitute is Expiate.

Apologise: express regret for something that one has done wrong.
Ingratiate: bring oneself into favour with someone by flattering or trying to please them.
Expiate: make amends or reparation for (guilt or wrongdoing).
Propitiate: win or regain the favour of (a god, spirit, or person) by doing something that pleases them.