But this, but you – small, pitiful and twiggy – you put me down with wine, you blinded me. come back, odysseus, and i'll treat you well, praying the god of earthquake to befriend you – his son i am, for he by his avowal fathered me, and, if he will, he may heal me of this black wound – he and no other of all the happy gods or mortal men.' few words i shouted in reply to him: 'if i could take your life i would and take your time away, and hurl you down to hell! the god of earthquake could not heal you there! ' at this he stretched his hands out in his darkness toward the sky of stars, and prayed poseidon: 'o hear me, lord, blue girdler of the islands, if i am thine indeed, and thou art father: grant that odysseus, raider of cities, never see his home -the odyssey, homer what motivates cyclops to ask poseidon to interfere with odysseus's journey home?

Odysseus had blinded him and taken his rams. moreover he had been outwitted by him. His anger at this action motivates  him to ask his father Poseidon to interfere with Odysseus's journey.

Explanation:

Odysseus and his man were on their way back to Ithaca when they came upon the island of the Cyclops. There they ate and took sheeps that had belonged to Polyphemus. Moreover, Odysseus had outwitted him and blinded him, a prophecy he had already known about. So, when he asked Odysseus to come back and talk to him kindly, Odysseus refused. This angered him, prompting him to ask to his father Poseidon to interfere in their journey back home.

we need more information in order to answer.

b. and i with my fighting heart, i thought at

first / to steal up to him [the cyclops].   the cyclops’ actions first odysseus to take

action after killing his men and trapping in the cave revealed his intent of

doing them harm.   that is why odysseus

blinded him to enable him and his men to escape.