How about the Boston Tea Party? I don't know much about it but I heard it's a good event to write about :)
The legislative aspect
The framers believed that the legislative house would be the most democratic, nationalistic looking and would check the excesses of the executive. The role of the national assembly would be to deliberate on issues of national importance.
I believe that the English Bill of Rights influenced the American colonies by providing a model of representative government.
I don't think A is correct because at the time, those three branches of government didn't exist yet. C is also incorrect because Britain didn't want to give America any freedoms. D is incorrect because that has nothing to do with either Bill of Rights or the American governmental system.
Britain in the 18th century