Final answer:
Odysseus reveals his true name to the Cyclops out of a sense of pride and anger, desiring glory for tricking the Cyclops and expressing his anger for the harm caused to his crew.
Step-by-step explanation:
The motivation that leads Odysseus to reveal his true name to the Cyclops is a combination of pride and anger. After Odysseus and his men manage to blind the Cyclops and are on the verge of escaping, Odysseus cannot help but shout back his real name out of pride, disregarding the initial wisdom of concealing it. This action demonstrates a deep sense of ego and the desire for glory to be associated with his cleverness and success in tricking the Cyclops. Additionally, the taunting reveals his anger towards the Cyclops for the harm he has caused to his crew. Odysseus's reveal goes on to have significant repercussions, as the Cyclops calls upon his father Poseidon to curse Odysseus, further prolonging his journey home.