The correct answer is repent.
The correct answer is (B) To repent; to make amends for a sin, wrong, or omission, or reparation for a crime or offense. To make up, as for errors or deficiencies..
Atone comes from Middle English atonen (to reconcile).
Examples of use:
- His religion requires that he atone for his failings.
- Someday, they will have to atone for their misdeeds.