I believe it would be the spy system. During the war, some americans were for and against the war and independence. To keep in the know of what the british were planning, there was an elaborate spy system to spread information on the british troops where people acted as they were for british rule. :)
Queen Elizabeth never had any children. That's why she is known as the Virgin Queen. But there was a rumor that she did but obviously if its a rumor then A is not an option. The rest of all the answers are correct.
