In the 86th amendment to the Constitution in 2002, which of the following was added as a fundamental duty of every citizen of India? a) A parent or guardian to provide opportunities for education to his child or, as the case may be, ward between the age of six and fourteen years b) To value and preserve the rich heritage of our composite culture c) To promote harmony and the spirit of common brotherhood amongst all people of India transcending religious, linguistic and regional or sectional diversities, to renounce practices derogatory to the dignity of women d) To protect and improve the natural environment including forests, rivers and wild life, and to have compassion for living creatures