Which Egyptian goddess was adopted into Roman religion?

Isis was an important goddess in ancient Egyptian religion, associated with various aspects of life, including motherhood, fertility, and magic. As Roman culture absorbed elements from the cultures it encountered, particularly after the conquest of Egypt, Isis became a prominent figure in Roman religion as well.

Her worship spread throughout the Roman Empire, and she was often associated with various Roman deities, gaining popularity among both common people and elites. The Romans admired her attributes, particularly her role as a protective mother and a source of magical power, which resonated with their own beliefs and practices. Temples dedicated to Isis were established in various parts of the empire, and her festivals were celebrated widely.

In contrast, the other options—Mithras, Lares, and Lar Familiaris—do not refer to Egyptian deities but rather to figures and concepts from Roman mythology. Mithras was a deity of mystery religions in Rome, while Lares and Lar Familiaris were household gods celebrated in domestic worship, reflecting the specific cultural practices of Rome rather than adoption from Egyptian mythology.