Which of the following is a widely used heuristic,called the M'Naghten rule,for determining whether an individual accused of a crime qualifies as insane

A)  Is he dangerous to himself or others? 
B)  Has he been diagnosed with a psychological disorder? 
C)  Has he been hospitalized for a psychological disorder? 
D)  Is he unable to distinguish right from wrong?

M'Naghten Rule

A legal doctrine that defines the insanity defense by assessing whether a defendant was capable of understanding the nature of their actions or distinguishing right from wrong at the time of the crime.

Insane

A term traditionally used to describe a person suffering from mental illness or demonstrating extreme irrational behavior, though it is considered outdated and insensitive in modern clinical contexts.

Psychological Disorder

A pattern of behavioral, cognitive, or emotional symptoms that cause significant distress or impairment in functioning.