Answer:
C. Thrushcross Grange
Step-by-step explanation:
On a day when Heathcliff and Catherine are going to spy on the residents of Thrushcross Grange, they end up being seen and caught. Identified as the young woman who lives in the neighboring house, the owners of the place welcome her, while sending their friend away because of their bad manners. Injured, Catherine spends five weeks at Granja, and when she finally returns, she is very changed
In Thrushcross Grange, Hindley's wife, produces in Catherine a great change: from a wild girl, who does not care for the appearance, to a lady of society, in clothes appropriate to her social position. However, this transformation shakes his friendship with Heathcliff, who is obviously embarrassed that he is no longer up to his friend. In addition, Catherine begins to be friendly with the two young residents of the Farm: Edgar and Isabella Linton. This makes her want to change her attitude, or at least disguise her behavior in front of them.
And at that moment Heatcliff realizes that Catherine enjoys the luxuries of civilization.