It shows that the narrator was an observer of the mystical events that appeared inside the house. He was a helpful man who tried to reach Roderick. However, it's like his friend had reached his time and his family and the house seemed to take him. This scared him to death as a manipulative environment came to life from the stories told by his friend.
Answer: C. Steam turbines
Explanation:
This is something you have to do on you own, sorry kid. Good luck though!