The correct answer is: Option B. John felt as if his world was crashing in on him.
The words in Option B state how the character is feeling due to his current situation. No external factors are presented to influence John's behaviour, but only what this character perceives on his own viewpoint.
Due to John's inability to see beyond his own feelings in order to describe his current situation in depth, it can be inferred that this sentence was written from a third-person point of view.
