Answer: 1, 3, and 4
Step-by-step explanation:
1. "I bade them search- search well. I led them, at length, to his chamber"
- This indicates that the narrator was confident enough that he allowed the officers to enter his house. Normally, a person in fear or guilty enough will hesitate and even ask for a warrant. In this case, the narrators strategy was to act as normal as possible and with confident the nothing had ever even occurred in his residence.
3. "There was nothing to wash out-- no stain of any kind-- no blood-spot whatever. I had been too wary for that. A tub had caught all-- ha! ha!"
- This asserts confidence. He dismantled the body and made sure that the blood didn't-- or wouldn't stain anything or leave behind any evidence of such. As he states "I had been wary," making it certain to the narrator, that there would not be a possibility of evidence to his crime.
4. "They sat, and while I answered cheerily, they chatted of familiar things"
- Again, his tactics was to act as normal as possible. Which was convincing. They checked out the house, stayed and chatted. Indicating that the narrator was not a suspect.
The reason why number 2 did not make the cut is because the narrator was questioning himself regarding the possibility of the officers knowing something and pretending not to know. This comes to show his paranoia. "Was it possible they heard not" indicating the narrator still thought of a slight possibility of them finding out.
Although, yes the narrator was confident, as the time went on, he started becoming more and more paranoid. Which is where the heart comes into play, where he is constantly hearing the beat of the heart. He was confident in getting rid of the evidence, yet extremely guilty of what had just happened, in the occurrence of his crime.