The answer is already there in your question.
The protagonist is a common citizen that is reading a book in his house when he becomes unsettled. The protagonist is working for NASA and holds expertise in extraterrestrial matters. The protagonist would rather be somewhere other than his house playing monopoly. The protagonist works with the government to conduct research on out-of-the-ordinary occurrences.
The protagonist is the main character whose fate is most closely felt by the reader or audience, and opposed by the antagonist. Antagonists resist by providing obstacles and complications and creating conflicts that test the protagonist, exposing the strengths and weaknesses of the protagonist's character. The protagonist is commonly also referred to as a 'hero'.
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No it could not have survived. Problem was Rome wasn't a stable republic, it was a very unstable one. ... Its just a matter of time before one of those men marches on Rome "to protect his rights", or two of them in some power sharing agreement (like Octavian and Antony) come to blows.
I think the correct answer is
A-2
B-2
C-1
D-2
Historians look for clues as to what life would have been like and what happened in the past, in different societies. They sift through a lot of evidence and of different geological regions.