Show quiz & answers without allowing submission?

[SaraMcBride-Gag]

Totally new to Carmen Canvas and can't seem to find what I'm looking for in the guides. 

I am heavily using quizzes for my class of 80 students for homework (unlimited attempts), at home quizzes (3 attempts), and just about everything else. I would like for them to still be able to see the quiz (preferably with answers) after the due date but not be able to "retake" the quizzes.

I think being able to see them is helpful for studying purposes, but when they retake them for practice prior to exams it overrides their grades prior to the due date. If I try to use the late autograde function, it is replacing even perfect scores from before deadline with zeros, which is not my intent. On the other hand, I don't want students who didn't do the assignment on time to be able to get credit for it. It's difficult to recheck 30 some odd assignments from 80 people on a regular basis to manually correct. 

I tried enabling the "available until" function, but it just locks them out. 

[RecycledElectro]

First option: Only keep the first attempt at a quiz as the grade.

How to do it: From the "Syllabus" page, click on the name of the quiz. Click on "Settings" at the top of the page. Under "Allow Multiple Attempts," set "Score to Keep" to "First."

Second option: Do not allow multiple attempts.

How to do it: When you see "Allow Multiple Attempts," slide the slider back to the left.

But, you also need to make sure they can see the quiz after they take it. I'm not sure how to do that.