When I built an assessment in the LMS and created a Multiple Choice type question with 3 correct answers, the system gives the user a score of 0 if they do not select all 3 of the correct answers. The user selected 2 correct options out of the possible 3 and selected 1 incorrect option. The system gave them a score of 0. Isn't the system supposed to allocate at least 2 marks since the user select 2 correct options out of the possible 3?
that's just the default, but you are free to manually decide how many points you want to assign for each correct answer.
You can also deduct points if the user selects a particularly wrong answer.