The answer would be Suddenly
A. You can easily rule out wishes and entertainment because the definitions (and connotations) do not match the rest of the sentence. Embarrassment also does not fit, because one can infer from word choice that the people were far more angry than embarrassed.
Answer:
What you're talking about
Explanation:
a noun clause is a dependent clause with a noun inside of it. usually starting with "How, that, what, whenever, where"
Answer:
C sometimes nations must separate from one another
The prefix in astronomer is astro