About the provit test or assessment test or what ever it is called. There is no logical correct answer that can be given. As a manager I have seen these type of things come up on a time to time case. I have had long term employees do stupid things just out of a fluke not at all like them ever. One question was why someone left right after the manager but still had 2 hours left on the shift. No answer fit that question. Because I had someone do just about that same thing in real life and it was none of the answers.
The best answer is the answer that you have experienced. Right or Wrong it is the best answer.
Answer the questions on your experience... and you can't be wrong. Experience beats any other answer.
DG might think you are wrong but you're not wrong.
If you want to answer giving the benefit of the doubt then there would never be anyone fired from DG. Has anyone been fired from DG for doing something on one of the questions that was asked? Take them to court get the test result from the person who fired you and if they answered the question different... then they need to give back your job. and give you the benefit of the doubt.