Which of the following is the best example of formal tone?

a. so, like, i believe that it's really important to register to vote.
b. you all have to register to vote, you know?
c. registering to vote is everyone's civic responsibility.
d. voting is very important and you should all do it.

The best answer for this question would be:

It shows that monarchs must worry about how the public perceives them.

At the time of Queen Elizabeth's reign, her political system focused on monarchy which means that the supreme power is held by the queen. This reflects that people might have overpower the queen, so it should be like a description on how the queen runs the place.