Final answer:
Zeus, attracted to Europa, descended to earth in the form of a white bull to carry her away to Crete.
Step-by-step explanation:
In the mythological story of Zeus and Europa, Zeus, who was attracted to Europa, famously descended to earth in the form of a majestic white bull. This transformation was one of Zeus's many disguises used to approach mortals or other gods while concealing his true identity. By appearing as a bull, Zeus was able to attract Europa's attention and subsequently carry her away to the island of Crete.