"what do fish have to do with anything?" which sentence best identifies the theme of the text?

I am assuming based upon the limited context of the story that "parents need to watch their children" best identifies the theme of the text as it demonstrates the paternal conflict as well. I am not sure if this is a multiple choice question or writer question where you can elaborate, but if it is the latter, I feel the sentence above most accurately depicts the theme evidently construed over her lack of attentiveness to her child's description of the day serving to both contrast and substantiate.

Explanation:

b. There is cure for unhappiness.