Answer:
D.
Explanation:
Insanity plea or insanity defense is a plea made by the defendant in criminal courts that at the time of committing the crime he/she was not mentally stable. Though the defendant acknowledges his/her crime but pleads insanity which states that the person did not know or was not able to differentiate between right or wrong while committing the crime.
From the given options, the statement of the defense attorney to plead insanity would be D. In that option, the reason that Wilson was psychotic thus unable to differentiate between right or wrong matches the criteria of insanity plea.
So, the correct answer is option D.