In Chapter 4, Gretel determines that their new home must be?

From the text:

'But we learned in geography class that in the countryside, where all the farmers are and the animals, and they grow all the food, there are huge areas like this where people live and work and send all the food to feed us.' She looked out of the window again at the huge area spread (page 34) out before her and the distances that existed between each of the huts. 'This must be it. It's the countryside. Perhaps this is our holiday home,' she added hopefully.