Explanation
Correct answer: A.
Choice A is the best answer. The text lists complaints about the house made by the mother and father, but then it says that the children thought the house was a "Fairy Palace" and "Earthly Paradise."
Why the other choices are wrong
Choice B
Choice B is incorrect. The text states the opposite of this. It describes how the mother and father dislike the house and says the children think the house seems like paradise.
Choice C
Choice C is incorrect. This isn’t what the text says. Only the children are said to admire the house; mother and father both complain about the house.
Choice D
Choice D is incorrect. The text states the opposite of this. It tells us the house was ugly and poorly built ("an architect’s nightmare") and suggests the children were tired of London.