It looks like the answer object has an issue:  the name of the answer is "answer_text" not "text".

Using the "id" of the quiz submission object did the trick.  In looking at the JSON returned from quiz submissions - {"quiz_id":216962,"id":1144880,"submission_id":8605...

I believe the endpoint Get Quiz Submission (in the Quiz Submissions API) is what you're looking for... https://canvas.instructure.com/doc/api/quiz_submissions.html#method.quizzes/quiz_submissions_...

Just a wild guess, but the id of the answer has a decimal point. This seems inappropriate.

Not sure if this helps or not, as I'm very new to Canvas, and am not familiar with practice quiz.That said,if the practice quiz requires that you start a quiz submission with the endpoint POST /ap...

I believe the endpoint Get Quiz Submission (in the Quiz Submissions API) is what you're looking for... https://canvas.instructure.com/doc/api/quiz_submissions.html#method.quizzes/quiz_submissions_...

Just a wild guess, but the id of the answer has a decimal point. This seems inappropriate.

It looks like the answer object has an issue:  the name of the answer is "answer_text" not "text".

Not sure if this helps or not, as I'm very new to Canvas, and am not familiar with practice quiz.That said,if the practice quiz requires that you start a quiz submission with the endpoint POST /ap...

Using the "id" of the quiz submission object did the trick.  In looking at the JSON returned from quiz submissions - {"quiz_id":216962,"id":1144880,"submission_id":8605...