The correct answer is A. Innocent.
An innocent person is not guilty of a crime or wrongdoing. They are free from blame or guilt.
A pure person is free from sin or moral impurity. They are morally clean and upright.
A virtuous person is morally good and upright. They are characterized by good character and behavior.
An angelic person is like an angel. They are kind, compassionate, and loving.
Of these options, only innocent is the opposite of guilty.