I was thinking about this just now, and for DD (and, um, ME) I think the multiple-choice problem also has to do with the desire for justice, which we share.

But it CAN'T be that. REALLY. No, okay. FINE. This is so STUPID. You're saying I have to choose this one, when obviously...(steam starts coming out the ears). Arrrgh! I hate this. Why do they have to... (Focus lost, child/parent is ranting)

My DD has been known to make editorial comments in the margin of her worksheets. (---> Doesn't make sense ----> Neither of these is right ---> Seemingly impossible) (The impossible one was possible; just a poorly written math question)