The quotation in the question describes a shift in Indian administrative law away from confining natural justice to quasi-judicial functions, and each option needs to be checked for whether it is the actual source of this principle.
Only A.K. Kraipak matches both the doctrinal content and the Indian context of the quoted principle.
Hence, the correct answer is A.K. Kraipak v. Union of India AIR 1970 SC 150.