According to Mrs. Which and Mrs. Whatsit, where is Meg's father? Somewhere on the two-dimensional planet on a planet behind the darkness that has fallen to its evil locked away on a moon of Uriel within the shadow that the children see covering Earth

On a planet Behind the darkness

Explanation:

According to Mrs Which, Meg's father has been trapped behind the great darkness. Mrs Whatsit then give Meg the hope by telling her that they are traveling so as to go and help him. And that they would be going by tesseract. Meg does not understand this. The tesseract is then explained to be a shortcut between time and space. And it makes travel between such distances to be quicker as well as easier.

b. brooks wrote about the same type of neighborhood in which she grew up.

ok i am here, i brought some cookies and some movies. do you use blu-ray cuz thats all i brought. oh, and my friend wwill be here shortly, he is going to bring some pizza too.