Answer:
The option that best represents a statement of fact is the first one: "Indeed, one hour after Japanese air squadrons had commenced bombing in the American Island of Oahu, the Japanese Ambassador to the United States and his colleagues delivered to our Secretary of State a formal reply to a recent American message."
Step-by-step explanation:
The answer is pretty clear and the key is to observe the phrase at the beginning of the paragraph: indeed. Indeed means in effect, in fact, and it represents something that happened for sure. There is no doubt that what's being described after this phrase, happened.
All the other options refer to something that might have happened or to a personal opinion that might or might not be accurate.