Answer:
D. World_War_I.doc
Explanation:
This is because the name of the report/topic is World War I, you might've been thinking it was A [History.doc] because the World War is a history topic, but what if you're learning World War II? Would you also make that History.doc? Never name a file a subject, always name it the report/topic; what you're learning not what subject it is...also it's D because I got it right.
