Whatever opinion he gives is sane.
A
arrogant
B
wild
C
obscure
D
rational
Correct Answer: rational
Arrogant : having or revealing an exaggerated sense of one's own importance or abilities.Wild : (of an animal or plant) living or growing in the natural environment; not domesticated or cultivated.
Obscure : not discovered or known about; uncertain.
Rational : based on or in accordance with reason or logic.
Sane : (of a person) of sound mind; not mad or mentally ill.
Synonym of Sane is Rational