The correct answer is: It gives an intimate view inside the main character
The main character's point of view and the way he is said to relate to what is around him, through his preferences, his perceptions, his senses, bring to the story a more intimate view of this character. Excerpts like "I never seem able to" or "my ability" show strengths and weaknesses of the character. His strength was to be a good listener, his weakness would perhaps be his shyness or sense of inability to comment.
You already got the answers. I'm confused on what you want me to do.
His toughness of character helps him stay alive in the jungle.
