You can configure a question with only two possible answers to fail the overall evaluation if the respondent selects the incorrect answer. When a respondent selects the incorrect answer, the evaluation does not end immediately. Instead, when an evaluator scores the evaluation, the fail result is assigned. 

When you create a evaluation form, you can include a fatal question.

1. Click a question.
2. Select Critical Question and Fatal Question check boxes.
3. Assign the correct answer a value of one.
4. Assign the incorrect answer a value of zero.