What creed was formulated at the Council of Nicaea?

The creed that was formulated at the Council of Nicaea in 325 AD is the Nicene Creed. This council was convened primarily to address the Arian controversy, which disputed the nature of Christ's divinity and relationship to God the Father. The Nicene Creed established a foundational statement of Christian faith, affirming the belief in the Trinity and the consubstantiality of the Son with the Father, meaning that Jesus Christ is of the same substance as God the Father.

This affirmation was crucial in countering Arianism, which claimed that Christ was a created being and not truly divine. The Nicene Creed has since been used in various forms by many Christian denominations as a central declaration of faith, emphasizing core beliefs about the nature of God and Jesus Christ.

In contrast, the other choices represent different creeds or definitions. The Apostles' Creed, although foundational in its own right, predates the Council of Nicaea and was not formulated at this specific event. The Athanasian Creed, attributed to Athanasius, arose later and focuses on the nature of the Trinity and Christ. The Chalcedonian Definition came out of the Council of Chalcedon in 451 AD, addressing Christ's dual nature