Concurrent powers are powers<span> in nations with a federal system of government that are shared by both the federal government and each constituent political unit such as a state or provence</span>
Correct they wanted no reason to get invoke
Plague is a deadly disease that people are afraid of.
For me, both B and D make sense. Do you have any text I can read?
People who serve on juries have a greater respect for the system when they leave. Serving on a jury educates the person serving about the flaws in Miscomprehension about the courtroom. It also allows one to possibly bring someone to justice depending on the case in hand.
Hope this helps :)