Scrooge realizes he is witnessing the aftermath of his own death when he sees people discussing the death of the person. He then sees his own body lying on the bed covered by a sheet, leading him to understand that he has passed away.
He looks for evidence for who seems to have died as many are referring to this. Scrooge of course suspects that it is his death he is witnessing.
It shows Scrooge witnessing his lonely death and the impact of his life on those around him. Scrooge knows unless he makes changes then the same fate that befell Marley would befall him
Scrooge finally realizes the ghost is showing him his future when he sees the scene of his own death in "A Christmas Carol" by Charles Dickens.
Scrooge was scared by the sight of the tombstone because it bore his name, indicating that it was a glimpse of his own future death. This sight made him realize the consequences of his mean and selfish behavior, stirring feelings of fear and regret within him.
Scrooge was horrified with what he saw in the future because he witnessed the impact of his own greed, indifference, and selfishness on both himself and those around him. The future revealed a lonely death and the lack of any genuine love or care from others, making Scrooge realize the consequences of his actions.
Scrooge had no more family following Fans death
He lacked an remorse of compassion. In Scrooge's mind he was dead and that was that
centurion
scrooge now is alive and Marley was death for seven year ago.
Scrooge was business partners with Marley and was likely in London when Marley died.
Because he shows Scrooge his potential lonely death if he does not change his ways.
The first men that Scrooge and Christmas Yet to Come meet are discussing the death of a rich man. They comment on how few people will attend the man's funeral, which leads Scrooge to realize the impact of his own actions.