Final answer:
The Sacrament of Penance, also known as Confession, allows Catholics to return to the Father in Christ for forgiveness of their sins.
Step-by-step explanation:
The correct answer is D) Conversion.
Catholics in need of a "second conversion" are able to return to the Father in Christ through the Sacrament of Penance. This sacrament, also known as Confession, allows Catholics to confess their sins to a priest and receive forgiveness. It is believed to be necessary for the remission of sins and the restoration of sanctifying grace.