Acquit :

Answer: Option B

Retreat : digress, recoil, shrink back, retrograde, fall back.
Conceal : hide, secrete, conceal, stash, wrap.
Deprive : debar, shear, bereave, mulct, denude.
Convict : declare (someone) to be guilty of a criminal offense by the verdict of a jury or the decision of a judge in a court of law.
Acquit : liberate, rid, set free, release, exempt.

Antonyms of Acquit is Convict.