Hesiod first records the Pandora story in Works and Days.
Hesiod was an ancient Greek poet generally dated to the late eighth or early seventh century BCE. His Works and Days contains the best-known early literary account of Pandora’s creation, arrival, and opening of the storage jar. The same work presents the story as part of Zeus’s punishment of humanity after the theft of fire.
Hesiod also discusses Pandora in the Theogony, but the two poems do not provide identical amounts of detail. Works and Days gives the fuller narrative, including Pandora’s arrival at Epimetheus’s home and the release of evils. The account is one of the earliest surviving literary sources for the myth.
Homer is a common wrong answer because he is the most famous early Greek epic poet, but the surviving Homeric poems do not provide the standard Pandora narrative. Sophocles and Herodotus lived later and are not the source traditionally associated with the story’s earliest surviving literary form.