What type of pronoun is the word in bold none?

The word "none" in this context is a pronoun. More specifically, it's a indefinite pronoun that refers to a lack of something.

Here's why:

* Pronoun: It replaces a noun or noun phrase (e.g., "There were no apples, so none were left.").

* Indefinite Pronoun: It doesn't refer to a specific person or thing.

* Lack of something: It indicates the absence of something.

Let me know if you have any other questions! 😊