I think we see the most outward reaction by Scrooge to the final ghost. However, I also think that the Ghost of Christmas Past may have touched one of the biggest nerves with Scrooge - that of his time spent with Belle, and how he ended up losing her because of his ambition for wealth. When the ghost shows Scrooge the time that Belle broke off their engagement, Scrooge is very upset:
'"Spirit!" said Scrooge, "show me no more! Conduct me home. Why do you delight to torture me?"'
After the ghost takes Scrooge to see Belle with her husband and...
(The entire section contains 3 answers and 308 words.)