What Is the Standard Applied to Examine Managers' Duty of Care

What is the standard applied to examine managers' duty of care?

A) The degree of care expected from an intelligent person faced with a complex problem.
B) The care expected from a shopkeeper while selling expensive goods.
C) The care expected from an ordinarily prudent person in similar circumstances.
D) The degree of care expected from a prudent businessperson during economic downturn.