Correct option is B
Fundamental Duties are enshrined in Part IV-A of the Indian Constitution under Article 51A. They were added by the 42nd Amendment in 1976, and they outline the moral obligations of citizens to promote the spirit of patriotism and to uphold the unity and integrity of India.
Among the options:
Option (a) refers to the duty to protect the environment, which is a part of Article 51A(g).
Option (c) corresponds to Article 51A(b), which talks about following the ideals of the national struggle for independence.
Option (d) is derived from Article 51A(h), which emphasizes the importance of scientific temper and humanism.
However, option (b), which refers to the abolition of untouchability, is not a Fundamental Duty but a Fundamental Right under Article 17. It deals with the prohibition of untouchability as a social evil and is enforceable by law, unlike Fundamental Duties, which are moral obligations. Therefore, the correct answer is (b).