All-or-Nothing Multiple Choice

The all-or-nothing multiple choice question is a version of the core multi-answer multiple choice question with modified grading. In an all-or-nothing multiple choice question, a respondent can choose one or more answers. If the chosen answers correspond exactly to the correct choices defined in the question, the respondent gets 100%. If he/she chooses any incorrect choices or does not select all of the correct choices, the grade is 0%.
This is a multiple-choice, multiple-response question type that was created by Adriane Boyd and later maintained by  Jean-Michel Vedrine . It is now maintained by  Eoin Campbell .
The all or nothing question is adapted from the existing multichoice question. The main difference from the standard Moodle multiple choice question type is in the way that grading works. The teacher editing interface is slightly modified as when creating the question, the teacher just indicates which choices are correct.
Grading
In an all-or-nothing multiple choice question, a respondent can choose one or more answers. If the chosen answers correspond exactly to the correct choices defined in the question, the respondent gets 100%. If he/she chooses any incorrect choices or does not select all of the correct choices, the grade is 0%. Before using this question type, teachers must really think if this grading is what they want.