Step 1: Introduction to the Directive Principles of State Policy (DPSP):
The Directive Principles of State Policy are outlined in Part IV of the Indian Constitution (Articles 36 to 51). While not judicially enforceable, these principles are considered crucial for governing the country. The question involves matching specific principles with their corresponding articles.
Step 2: Principle-Article Matching:
(A) Equal pay for equal work (men and women): This socialist principle is found in Article 39(d) and corresponds to (III).
(B) Just and humane working conditions and maternity relief: Article 42 mandates the state to ensure just and humane work conditions and provide maternity relief. This matches (IV).
(C) Living wage and decent standard of life for labor: Article 43 directs the state to secure a living wage and decent living standards for workers. This corresponds to (I).
(D) Nutrition, standard of living, and public health improvement: The state is obligated, under Article 47, to enhance nutrition, living standards, and public health. This aligns with (II).
Step 3: Correct Pairing Summary:
The correct pairings are: A $\rightarrow$ III, B $\rightarrow$ IV, C $\rightarrow$ I, D $\rightarrow$ II.
Step 4: Answer:
The correct option matching the derived sequence is (C).