OP this doesn't send like a head stumper to me. What are your expectations? Ie what do YOU expect in a job? Nannies on this board clearly have a zillion expectations and you all get out of sorts if they aren't met BUT when you are asked you can't come up with them? Really?

This is your opportunity to put your deal breakers on the table. Is it guaranteed hours, making a certain amount per week, PTO, not using you car or using your car with mileage compensation? If you aren't in the DC area, include being paid legally as this is far from standard in other parts of the country.

I wouldn't recommend sending a five page list but now is the time to communicate what is most important to you. It makes no sense to continue on with more interview if this employer isn't planning on matching those expectations.

You can also include a few fuzzy type sentences on good communication, aligned childcare philosophies etc etc so it doesn't sound too demanding.

From an MB's perspective, I would answer the question to address what are your expectations of MB or the family?

For example....

I expect that MB will communicate openly about my performance, and openly communicate what she expects from me and if there is an issue
I expect that MB will be timely about returning home or notify me in advance if she is delayed.
I expect that requirements regarding childcare will be clearly laid out.

These are just my thoughts. If you require to be paid over the table I would also state that.