This is actually a very common question.
I think this has to do something with immigration rules or something stupid like that. I think this is to avoid people coming to the US without money and expecting to work to pay for tuition. This is a leftover question from the 80s.
For years years AdCom used to ask this question before you even applied so if you did not have the assets, you weren’t supposed to apply 😳
You can ignore this. The scholarships are as mentioned about your merit and not affluence.
And as mentioned this doesn’t include loans and other vehicles so technically everyone should be saying yes I’ll be able to pay for it with a combination of loans and savings and scholarships and whatever.