Answer:
Quickening the pace of the story.
Step-by-step explanation:
One of the techniques that the author employs in this passage is that of quickening the pace of the story. At the beginning of the story, the author employs a slow pace. He describes all the objects of the house in detail, including the house itself and the rest of the setting. However, as the author approaches the moment of excitement, he quickens the pace of the story in order to build suspense.