"Somehow the killing of the giant spider, all alone by himself in the dark without the help of the wizard of the dwarves or of anyone else, made a great difference to Mr. Baggins. He felt a different person, and much fiercer and bolder in spite of an empty stomach, as he wiped his sword on the grass and put it back into its sheath."

How is this a significant moment for Bilbo?
This quote is significant because it shows how Bilbo is growing as a hero. After killing the spider, he becomes more courageous and bold.
This quote is significant because it shows how much of a coward Bilbo is in the story. After killing the spider, he becomes more timid.
This quote is significant because it demonstrates how crazy Bilbo has become in Mirkwood. He has lost his mind and is speaking to his sword.
This quote is significant because it shows Bilbo slowly turning evil. Using his sword to kill the spider is an example of how malicious he has become.