Final answer:
In Dante's Inferno, a greyhound symbolizing a savior will destroy the three beasts representing sin, as mentioned by Virgil.
Step-by-step explanation:
According to Virgil, as portrayed in Dante's Inferno, a virtuous greyhound will someday appear to destroy the three beasts Dante encountered in the dark forest: the leopard, the lion, and the she-wolf. These beasts are symbolic of different types of sin, and the greyhound represents a savior who will come to eradicate these sins and restore order.