Unique means to be unlike anything else. When something or someone unique, they are one of a kind. It is often a very nice compliment when meant as a compliment. Sometimes unique can be used as a placeholder for a compliment when someone does not wish to insult the other person. If you think something is ugly or bad, you can say unique, because the thing or person can still be unlike anything else, even if it's not good.
Answer:
In general linguistics, an intensive pronoun is a form that adds emphasis to a statement; for example, "I did it myself."
Explanation:
The answer would be C, because him knowing that he can do this to his sister gives him knowledge which then causes him to have power over the situation.