20. "Work of H. L. A Hart" is an example- a) Material Source b) Formal Source c) Historical Source d) Customary Source e) Religious Source 21. Legislations, Precedent, Customs, Agreement, Treaties and Conventions are the examples of a) Legal Source b) Formal Source c) Historical Source d) Customary Source e)Religious Source 22. -are the basic rights and freedoms that belong to every person in the world from birth until death Moral Rights b)Natural Rights c)Human Rights d)Customary Rights e)Religious Rights