You Have Brought an Action in Negligence Against Rose Nielson

You have brought an action in negligence against Rose Nielson, an architect. You must prove, among other things, that her conduct fell below an acceptable standard of care. What is the standard?

A) That she acted to the best of her ability.
B) That she acted as may reasonably be expected of a normally skilled architect
C) That she acted as a reasonably prudent person
D) That she acted sincerely and with goodwill
E) Both A and D