Final answer:
The sacrament of Penance, also known as Confession, reconciles an individual with God and the Church by providing forgiveness for sins committed after Baptism and involves acts of satisfaction to repair the harm caused by sin.
Step-by-step explanation:
The sacrament that reconciles an individual with both God and the Church through the forgiveness of their sins is D) Penance. Penance, also known as Confession, is one of the seven sacraments in the Christian Church and is necessary to receive forgiveness for sins committed after Baptism.
It involves the individual's confession of sins to a priest and the priest's absolution and imposition of certain acts of satisfaction or 'penance' to repair the harm caused by sin. The sacrament restores the penitent to God's grace and joins them once again in full communion with the Church.