Answer :
Answer:
B is what I'm going to answer, but it might be C.
Explanation:
It's not A because that's not relevant to this case and it's not D because that's irrelevant too, so it has to be B or C. The reason I think it's B (even though in modern times I know it would be C) is because the only reason given by the officers is that they thought the act of protesting itself presented a danger to the public, not that they did anything violent or illegal. These people can't be arrested as long as the individuals in question were peaceful and did not enourage violence, even if other protesters were violent. I think the test wants us to remember that people are always allowed to protest as long as its peaceful.
Sorry I wasn't more helpful, but was looking for the answer myself and I was really annoyed by the one "answer" the other guy gave that tricked me into coming here and leaving unhelped.