Paragraph 2 is the only one, from what i can tell, that describes any type of relationship with the dad.
Dramatic Irony is a situation in a drama wherein the characters in the play cannot grasp what's happening, but the audience can already understand what is going to happen and understood what has happened. So the answer is, Audience knows something the characters don't know.
The most likely correct answer to me would be D
B. Many internet dads are quickly replaced by new ones