Final answer:
Iago manipulates Roderigo into joining his plot by claiming that Desdemona is in love with Cassio, exploiting Roderigo's jealousy to further his own vendetta against Othello. THe correct option is O B) He tells Roderigo that Desdemona is in love with Cassio and they can break them up.
Explanation:
Iago convinces Roderigo to join his plot against Othello by suggesting that Desdemona is in love with Cassio, and by undermining the couple, they can split them up. Iago plays upon Roderigo's affections and jealousy towards Cassio, portraying Desdemona's relationship with Cassio as inappropriate and thus enflaming Roderigo's desire to disrupt their relationship.
This manipulation is part of Iago's larger scheme to avenge himself against Othello, whom he secretly dislikes. Iago's ability to twist the truth and prey upon the weaknesses of others is a prominent theme in Shakespeare's Othello, and this instance is a clear demonstration of his deceitful nature