The correct answer is that Poseidon is hindering him, Calypso is not letting him leave, and the gods have not yet decided his return. This is because in Greek mythology, Odysseus is trapped on the island of Ogygia by the nymph Calypso, who falls in love with him and refuses to let him leave. Poseidon, the god of the sea, is angry with Odysseus and constantly creates obstacles for him, making it difficult for him to return home. Additionally, the gods have not yet decided when or if Odysseus will be allowed to return to Ithaca.