In the Roman Catholic faith, what is the name of the religious picture of Jesus Christ that depicts his radiant heart?

The correct answer is "Sacred Heart." In Roman Catholicism, the Sacred Heart represents the physical heart of Jesus Christ as a symbol of his divine love for humanity. This devotion emphasizes God's love, compassion, and mercy, and the image typically portrays Christ with a heart that is aflame with love, often surrounded by a crown of thorns and sometimes depicted with wounds.

The Sacred Heart is central to many Catholic practices and is featured in prayers, feasts, and artwork, making it not only a religious icon but also an expression of the emotional and spiritual relationship believers are called to cultivate with Christ. The imagery serves as a visual reminder of God's love and sacrifice and is intended to inspire devotion and blessing in the hearts of the faithful.

The other terms mentioned may address aspects of Christian iconography but do not specifically refer to the iconic depiction associated with this significant devotion.