Answer:
primary sources are directly from the event or person. for example a presidential speech.
a secondary would be like a news article about said speech
An example:-
A murder done by someone is a punishable offence
Office supply with letter h is handbook
(This is about a tiger, haha)
Its claws were so sharp, so they realized it's too dangerous to risk their lives to approach the tiger.
I think the most grammatically correct answer is actually B. Correct me if I am wrong.