It suggest's mystery by using a date that seems to be picked at random.
A. Synthesize, if he is compiling multiple sources together.
You use one by kind of like end of sentences but they are pausing. I think that's how you use them.
The answer should be D) because A) is not tension, B) is really not tension, and C) is not suspense either so I would go with D) since we don't know what they're talking about and why so quiet.
