Final answer:
The M'Naughten Rule is a legal standard that determines a person's legal responsibility for their crimes based on their mental state. It states that a person may be found not guilty if they were insane at the time of the crime.
Step-by-step explanation:
The M'Naughten Rule is a legal standard used to determine a person's legal responsibility for their crimes in cases of insanity. According to this rule, a person may be found not guilty if they were insane at the time of the crime, meaning they did not understand the nature of their actions or could not differentiate between right and wrong.
This rule establishes that in order for a person to be held responsible for their crimes, they must possess the required mental state or intent to commit the criminal act. In cases where insanity is proven, the person is not held legally responsible for their actions and may be acquitted.