In Which of the Following Cases Is the Active Voice

Multiple Choice

In which of the following cases is the active voice preferred over the passive voice?

A) when you want to point out mistakes without attributing blame
B) when you want to make a subject livelier and more direct
C) when you want to point out what's being done without taking credit
D) when you want to avoid personal pronouns in order to create an objective tone
E) when you want to be diplomatic about pointing out a problem or an error