If you are referring his defeat at the end against the dragon, that is because of his hubris. He was too proud and believed that he could do it alone without his soldiers. This brings his defeat and he realizes that he will die because of his hubris, after which Wyglaf will take over since he was the only one brave enough to help.
Answer:
no I'm not a human and I'm not like the reality wala pic lol
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."