The answer would be C because the narrator is not an active person in the story.
The underlined word of the sentence which "conclusive" would have a denotation of "impossible to disprove" as it is used in the sentence. Furthermore, a denotation is the "literal" meaning of a word or some may refer to it as the "dictionary definition or meaning."
Answer:
“Mother-croon of bird” is the gentle humming voice of a mother-bird to its baby. The song is not sung in a hushed voice, but it is heard in the hushed moments of twilight, as then the noises in the surroundings gets reduced.
Explanation: