The ghost that most affected Scrooge

In my opinion, the ghost that affected Scrooge the most is the Ghost of Chirstmas Yet to Come. It is because, after the visit of the Ghost of Christmas Yet to Come, which Scrooge saw his own death,  his happiness was overwhelming him. The happiness of being alive overwhelmed him that he attended his nephew's christmas dinner, sent a turkey to Bob Crachit, his employee. Also, he raised Bob's salary. He took care of Tiny Tim, who was very weak and who was about to die. Fortunately, Tiny Tim did not die, and Scrooge was like a second father for him. And he totally transformed to another person. Scrooge changed so much and spent Chirstmas so merrily, that it was said that no one knew better about how to spend christmases.