Answer:
B). Following through on a pre-existing duty.
Explanation:
As per the question, 'following through on a pre-existing duty' would not be called a consideration as it does not involve any kind of careful thought but rather the action. The other options('Undertaking an act not legally required' and 'Refraining from doing something you would otherwise be free to do') exemplify the actions that require careful thought and attention before reaching any conclusion. Thus, option B is the correct answer.
