Answer:
In source A, we have the perspective of someone traveling on the train when the accident happened. In source B, we have the point of view of the parents of a victim.
We can see that in source A, the writer gives a detailed description of what he witnessed. That is to say, the injured passengers, the moment of the accident, and how he witnessed deaths. We can perceive how traumatized DIckens is with the situation.
In source B, we feel the pain of Juliet's parents. They did not witness the accident, but they lost a beloved one. In this source, we have the parent's perspective when they realized that their daughter was one of the victims and how that event had changed their lives forever.
Step-by-step explanation:
The two texts describe train accidents, but we can see that the perspective of the first one is from someone who was there when the accident happened, and it describes how traumatized he is due to the accident. We can see this when he says, "I should have written to you yesterday or the day before if I had been quite up to writing. I am a little shaken, not by the beating and dragging of the carriage in which I was, but by the hard work afterward in getting out the dying and dead, which was most horrible."
In source B, we have the perspective of Juliet's parents, one of the victims of the rail disaster. They express their grief and describe how they realized that their daughter was one of the victims. We can see this in line 13 "...It wasn't until lunchtime that I called. I still couldn't get an answer, so phoned her company. They said: 'We're afraid she hasn't arrived yet, Mr. Groves, and we're very worried.' At that point, my heart sank." We can see that they are still grieving and that this was an event that changed them with the last paragraph, "But that promise is not enough for Denman and Mauren Groves. Neither has boarded a British train since the crash and never will again. Their grief would not allow it, nor the sense of lingering injustice. "I can't do it, I won't do it," says Denman. "I don't want any involvement with Network Rail. The last contact I had with them was at the trial in 2007. I told the chairman he ought to be ashamed of himself."