Conversation so far:
how many episodes are there in season 2 of preacher
There are 13 episodes in season 2 of Preacher
is the series based on a book
The series Preacher is based on the comic book series Preacher created by Garth Ennis and Steve Dillon, and published by DC Comics' Vertigo imprint.
how many seasons of preacher are there
The series Preacher is 4 seasons long
when did the series preacher conclude
The series Preacher concluded on September 29, 2019.

Question: what was the approval rating for the fourth season
Self-contained rewrite: what was the approval rating for the fourth season of preacher