If a person with a mental illness committed murder but was convicted of committing manslaughter, that person probably lived in a state that had a:

A) guilty but mentally ill option.
B) guilty with diminished capacity option.
C) not guilty by reason of insanity option.
D) guilty by reason of insanity option.

Manslaughter

The unlawful killing of another person without premeditation or so-called "malice aforethought", which differentiates it from murder.

Mental Illness

A broad range of mental health conditions that affect mood, thinking, and behavior, and can significantly impact daily functioning.

Diminished Capacity

A legal defense argument that asserts a defendant was not fully able to understand the nature of a criminal act or its wrongfulness due to mental impairment, though not to the extent of insanity.