Which of the following is a responsibility of British citizens?

The responsibility of British citizens to obey the law is fundamental to maintaining order and safety within society. Laws are established to protect individuals' rights, ensure social justice, and provide a framework for how citizens should interact with one another and with the state. By adhering to the law, citizens contribute to a stable community and uphold the values and norms that underpin society.

Voting in elections, while highly encouraged as a civic duty, is not mandatory in Britain; therefore, it cannot be considered a definitive responsibility of every citizen. Similarly, while education is essential, it is publicly funded and compulsory for children, meaning citizens are not directly responsible for paying for it. Lastly, serving in the military is not a legal obligation for citizens, as military service is voluntary in the UK. Thus, obeying the law stands out as the clear and critical responsibility of all British citizens.