The Verma Committee on Fundamental Duties has cited as many as 138 Supreme Court cases that facilitate the enforcement of a particular fundamental duty. Which Fundamental Duty from among the following has been referred to by the Committee in this context ?

• A. To abide by the Constitution and respect its ideals and institutions the National Flag and the National Anthem.
• B. To promote harmony and the spirit of common brotherhood amongst all the people of India.
• C. To protect and improve the natural environment.
• D. To provide opportunities of education to child between the age of 6 and 14 years.