Answer:
A nickname is a name that only close people can call someone, or they prefer the nickname to be their public name.
Explanation:
The correct answer is A. In that time, it was important to know where a person's family was from.
Family name has always been important in history. It is still important nowadays, but many might disagree with that.
Correct sentence would be: I just found out that he was cheating on the test.
Hope this helps :)
C. by describing the character's appearance and social status