Filter Hook: Filter single question type returns by dozent_get_question_types();

Function: Get the quiz option by quiz ID

Filter Hook: Filter quiz single option when $option_key is exists

Filter Hook: Filter quiz options

Function: Get quiz attempts

Function: Count all attempts by course

Function: Count all attempts by Quiz

Function: Get the answers placed by a user on the quiz attempt

Function: Get all correct questions options

Function: Get all attempt statuses or any single status text retrieve by status key