It sounds like you're talking about Knowledge Check blocks. There's no way to hide which are the correct options in the feedback nor to require passing them. Their purpose is to simply provide a bit of practice and (hopefully) helpful feedback that can be presented throughout the course.
In Rise, an actual Quiz exists as a separate lesson. Those questions don't provide feedback on each question. The settings for a Quiz can require that the user passes before they can continue. You can insert multiple Quiz lessons into a course. However, only one Quiz can be used to track completion.