The accounting guideline that requires financial statement information to be supported by independent, unbiased evidence other than someone's belief or opinion is the:

A business entity principle.
B monetary unit principle.
C going-concern principle.
D objectivity principle.

I am sure you are aware that we are here to help you with problems. It would have been better if you had mentioned your own solution for further guidance.

I think it would be quite easy for you to answer the question yourself if you know what each of the four principles entail. Try to compare the situation to see which principle best fits the situation.