Answer:
D) “there was no attendants at home; they had absconded to make merry in honour of the time. I had told them that I should not return until the morning, and had given them explicit orders not to stir from the house”
Step-by-step explanation:
The narrator knew that there would be no witnesses to his crimes, because he himself took care to prevent the existence of anyone in the place where he would perform his vile acts. In this case, the witnesses would be the house attendants, whom the narrator gave orders that they should not, under any circumstances, show up at the residence until dawn, when he would have finished his crimes.