Well your asking "Can a question be a annotation" And the definition if annotation is "a note of explanation or comment added to a text or diagram." Now looking at that we see "explanation or comment" So in a way...It's more of a answer not a question...
Look it up, you will be able to find it there
Answer:
a series of recent post by astronauts.
Explanation:
this would be the most reliable source because it is first hand information, instead of people who havent visited space or traveled space.
The answer is C. present; first-person