Answer:
al-Qaeda
Explanation:
OPEC is a petroleum organization and the United Nations try to preserve peace and don't look for terrorism. Indian National Congress was striving for peace.
Answer: C
Explanation: Because D and A are the Primary Sources, because it is a Diary and a photo. And a photo and Diary were made at the time of the event. And C is describing how it happened.
Secondary sources is the right one