Answer:
The answer is C - bachelor's degree in risk management.
Explanation:
Education that Nathan might have to had to be on her position now is bachelor's degree in risk management. As indicated at the first sentence, Nathan's position now is "risk manager". In addition, the passage also demonstrates her duty at work, including collecting data on accidents and losses - which are business's risks. Furthermore, as she has to cope with these risk, so that knowledge in managing risk (evaluating and solving problems) is essential for Nathan. So that the answer is C.