Answer:
I was given a bang on the head by someone.
I would say C is the correct answer
I hate to say it, but your editorial is going to sound very school newspaperish if you use 1st person.
Answer:
A formal declaration that someone is guilty of a criminal offense, made by the verdict of a jury or the decision of a judge in a court of law.
Explanation:
Example: "she had a previous conviction for a similar offense"