Here is the list of pronouns in the order they appear in the text, assigned to their particular groups:
1. interrogative pronouns (the ones who ask a certain question): WHAT, WHAT
2. possessive pronouns (the ones which show a certain possession): YOURS, YOURS
3. personal pronouns (I, you, he, she...): IT, IT, YOU, YOU, YOU, IT, US
4. indefinite pronoun (you cannot exactly determine who it is about): EVERYONE, ANYONE, SOME, ALL, EACH
5. relative pronouns (connect a clause to a noun/pronoun): WHO, THAT, WHATEVER
6. demonstrative pronouns (point to a particular thing): THESE
I think it would be likely. Britain is a country that is well-developed and has a decent military. If you are referring to war in London or other big cities, I think the armies would try to keep warfare on the battlefield, not urban areas. However, to counter that, (correct me if I'm wrong), I believe London is on the water, so a type of naval invasion would be likely. It also depends on who the fighters are. Britain v. U.S.A. for example, evacuations of cities would begin, and it's likely we'd see another Refugee Crisis like the one happening now in Europe, but smaller. But the U.K is part of the U.N., a huge group of unified countries. If war were to break out, it's likely forces would be pushed out easily with the help of other powers/countries.
I believe your answer is A because almost all people with knowledge know that grass is green. Someone would only ask this if they weren't for sure, such as someone being color blind. Hope this helped!
Thanks!
~Steve
Repartee=often witty and cheeky: an example;
Teacher: Did you finish your homework?
student: yes
Teacher: wow, I'm surprised.