Which technique does homer use at the beginning of book nine of the odyssey to inform readers about Ulysses adventures after the Trojan war

These are the choices I found on the internet:

a. in medias res

b. foreshadowing

c. invoking the Muse

d. flashback

The answer would be letter A - in medias res. For example, the Iliad starts dramatically with the dispute between Achilles and Agamemnon during the Trojan War. In medias res normally draws a narrative that begins, not at the start of a story, but somewhere in the middle. That's why in English, this means "into the middle of things."