C. Obey laws is the correct answer.
Explanation:
Obeying the law is a mandatory civic obligation of American citizens.
The US constitution provides certain freedoms that are protected by law, the Bill of Rights contains all these rights. It guarantees the freedom of religion, speech and various other rights. The constitution has been amended many a times to give important freedoms to the citizens. Likewise, citizens have some obligations that they should follow to meet the societal standards and guidelines, there are two types obligations, voluntary and required by law (Mandatory). The responsibilities/obligations sustains the democratic values mentioned in the constitution and bill of rights. Obeying the law, Paying taxes, Serving on a jury when summoned, Registering with the selective service are mandatory Duties of US citizens while voting, community involvement, practising tolerance are voluntary responsibilities.