The bolded pronoun in the given sentence is the word "which". This pronoun is an example of an interrogative pronoun. Interrogative pronouns are pronouns that are used to introduce a question. The antecedents of interrogative pronouns are unknown because it is what is being asked in the sentence that is missing.
That he is a great writer and he has the most books wrote
A.whales are mammals not fish APEX
Hey, this isn’t ab the question but don’t open that link they’re fake people and they can track your location
Thoreau lived on Emerson's land, which was the subject of one of his books.
