Answer:
A) To prevent.
Explanation:
A democracy gives the power already to the people. The expectation and the "job" of the citizens therefore, is to prevent the erosion of the quantity as well as quality of their rights, to obtain new rights when the time period addresses and allows it, and to arm themselves just as heavily as the government, in order to ensure a quality of life for their own rights, and to protect the people's own interests. The failure to prevent the destruction of their own democratic system always leads to the government obtaining too much power, which in turn leads to the disarmament of the people, the collection of their rights, and then the systematic destruction of the natural as well as given rights.
How is the citizens expected to prevent the deterioration of their democracy? The first step is to have a charter written out that explicitly states their rights, as well as making provisions for additional rights to be added when needed to be addressed (for example, in the US it is the Bill of Rights). The second way is to allow for the people to be able to safely protest the government if it impedes their rights, which is provisioned in the First Amendment of the Constitution. Thirdly, the US public must be able to arm themselves to be able to overthrow a suppressive government if need be, which is provisioned by the Second Amendment of the Constitution (the right to bear arms, provision for weaponization of the general public), as well as in the Declaration of Independence, which suggests that such as natural rights must not be taken away by any government, and that if a oppressive government was to take power, that the public had the right to overthrow it.
Citizens in a democracy, in order to complete what is expected of them, is subject to the need to use their rights given to them, as well as obtain new rights when the times ask for it (such as the civil rights act, for example), and to have the adequate equipment and logistics to be able to protect the rights given to them.