short key freeform questions

Adding here a helpful workaround that John Carlo Sipagan,  from Articulate Support gave me:

1. Add a freeform pick one quiz slide.
2. Add a checkbox outside the slide.
3. Go to form view and designate the checkbox as the correct answer.
4. Go to slide view and add the trigger to change the state of the checkbox to selected when the user presses comma (,).
5. Disable the original submit trigger.
6. Add a trigger to submit the pick one interaction when the user presses comma.

Here's a demo for reference:

https://360.articulate.com/review/content/334f2f91-79b8-48f0-94e3-b773951cadac/review