He was frustrated for obvious reasons. But was described as 'perplexed and still' because he expected a answer from the inmates that were inside the house, but instead of answering his repetitive calls, they chose to give no response leaving the traveler to experience his 'stillness'.
Answer:
Answer of letter A.The narrator is able to justify his failures with theirs.
Explanation:
Because the narrator is suggesting they are responsible for the state of science
