Answer:
An Idiom, you <em>idiom</em>! Just kidding, lol.
The noun to which a pronoun refers is called the (B) antecedent.
It means to 'go before' in Latin, so the noun must come before the pronoun so it can refer to it.
If this question has the same list of options as to the questions <span>previously </span>posted here , then the answer would be letter C. She could use her charm before or after the experiment or if the experiment did not take place, unless she was a hag before the experiment took place.