Final answer:
Iago perceives love in marriage as a fleeting illusion, as evidenced by his manipulative and cynical actions throughout Shakespeare's play.
Step-by-step explanation:
The question pertains to the character Iago's perception of married men in Shakespeare's play, and the closest answer we can derive through his cynical lines and manipulative behavior is b. That love in marriage is a fleeting illusion. Iago is a character who prides himself on his ability to deceive and manipulate those around him, including his own wife. He cynically uses other characters' trusts and weaknesses to his advantage, showcasing a clear distrust of marital bonds and an apparent belief that all love in marriage can be exploited and is ultimately fleeting.