Hello @PamelaMarshall
Thanks for posting this in the Canvas Community!
I'm assuming that you have your Fill-in-The-Blank questions setup for use with the Classic quizzes engine. I know that if you have some Fill-In-The-Blank questions that were used with the classic quizzes engine, when you migrate them to be used for New Quizzes, It should convert them so you do not need to edit the question by adding the backticks. I tested this by setting up a Classic quiz in a sandbox course I have. I added a standard Fill-In-The-Blank question to it. From there, I used the New Quizzes Migration feature and it converted it so that the Fill-In-The-Blank possible answer already has the backticks that are necessary for use in New Quizzes.
HERE is the Canvas guide on Migrating a Classic Quiz to New Quizzes.
-Colton