Descendants for sure haha!
Answer:
d) Mercedes is the only one at home, and she is too busy with her embroidery in Madam Hailer's room to come near you
Explanation:
a) “You are going to build a large house, Mr. Darrell?” said Victoriano, turning his horse so as to ride beside Clarence; “judging by the amount of lumber being hauled.”
b) “I understand, and I think my father will be willing to sell the land. He is at home now. Let us go up to see him.”
c) They have too much sense not to know that you would not be working in white kid gloves.
d) Mercedes is the only one at home, and she is too busy with her embroidery in Madam Hailer's room to come near you
Since Mercedes is depicted as being at home alone before having a love encounter, it is clear that the author has resorted to narration to communicate this information.
Anything which is not stable (unlikely to move) is unstable.