The correct answer is A. Retreat.
To acquit means to declare someone not guilty of a crime. To retreat means to move back or away from danger. To convict means to find someone guilty of a crime. To conceal means to hide something. To deprive means to take something away from someone.
In the context of the question, the word “acquit” is most likely being used in the legal sense. In a court of law, an acquittal is a verdict of not guilty. When a defendant is acquitted, it means that the jury has found that the prosecution has not met its burden of proof beyond a reasonable doubt.
The other options are not as relevant to the context of the question. To retreat means to move back or away from danger. This is not something that is typically done in a court of law. To convict means to find someone guilty of a crime. This is the opposite of what happens when someone is acquitted. To conceal means to hide something. This is not something that is typically done in a court of law. To deprive means to take something away from someone. This is not something that is typically done in a court of law.