One essential duty of a citizen to his state is to
support the government in power
recite the pledge
pay his tax
encourage other citizens
Correct answer is C
One essential duty of a citizen to his state is to pay his tax. There is no option to the performance of such duties as payment of taxes enlisting into the national army when the need arises, giving evidence in court as might be needed.
A good citizen must endeavour to pay his tax to the government so as to assist in raising funds for projects in the community.