The Constitution of India provides for several fundamental duties that are expected of all citizens of the country. These duties are enshrined in Part IV-A of the Constitution and were added through the 42nd Amendment Act of 1976.
The fundamental duties of a citizen of India are as follows:
To abide by the Constitution and respect its ideals and institutions.
To cherish and follow the noble ideals that inspired the national struggle for freedom.
To uphold and protect the sovereignty, unity, and integrity of India.
To defend the country and render national service when called upon to do so.
To promote harmony and the spirit of common brotherhood amongst all the people of India transcending religious, linguistic, and regional or sectional diversities.
To value and preserve the rich heritage of our composite culture.
To protect and improve the natural environment including forests, lakes, rivers, and wildlife, and to have compassion for living creatures.
To develop the scientific temper, humanism, and the spirit of inquiry and reform.
To safeguard public property and to abjure violence.
To strive towards excellence in all spheres of individual and collective activity.
Now, regarding the given options, all of the following are fundamental duties of Indian citizens except option (A) - "To vote in public elections." Although voting is an important aspect of civic duty, it is not considered a fundamental duty under the Constitution of India. However, it is considered a right of every citizen under the Indian Constitution.
Therefore, the correct answer to the question is option (A) - "To vote in public elections."