In R v. Miller, what action led to the conviction for arson?

In R v. Miller, the action that led to the conviction for arson was failing to extinguish a lit cigarette. This case hinged on the concept of recklessness combined with the defendant's neglect in handling a dangerous situation they had created. Miller had been squatting in an unoccupied building and, after accidentally starting a fire with a cigarette, he moved to another room instead of taking action to put it out. This inaction and disregard for the resulting fire demonstrated a reckless attitude toward the potential harm that could arise from his negligence, ultimately leading to his conviction.

The other options do not accurately reflect the court's findings in this case. For example, leaving a stove on or intentionally setting fire to a building were not the actions Miller took. Additionally, while causing an explosion due to negligence involves a similar recklessness, it was the specific failure to act on an existing fire that resulted in Miller's conviction for arson. This case reinforces the principle that individuals can be held liable for crimes resulting from their negligence when they have created a dangerous situation and then fail to take appropriate action to mitigate that danger.