Step 1: Concept
This question links major Western philosophical schools (existentialism, idealism, Marxism, pragmatism) with their principal advocates or philosophers.
Step 2: Meaning
Each philosophical school has distinct tenets, represented primarily by key historic thinkers who established or popularized them.
Step 3: Analysis
[leftmargin=20pt, itemsep=3pt, topsep=4pt]
• A. Existentialism – II. Sartre: Jean-Paul Sartre was the preeminent French philosopher who defined modern existentialism around individual freedom, choice, and responsibility.
• B. Idealism – IV. Hegel: G.W.F. Hegel was a giant of German Idealism, proposing that reality is a product of absolute spirit or mind.
• C. Marxism – I. Gramsci: Antonio Gramsci was a highly influential Italian Marxist philosopher who expanded class-struggle concepts into cultural hegemony.
• D. Pragmatism – III. Peirce: Charles Sanders Peirce was an American logician and philosopher who is universally acknowledged as the founder of pragmatism.
Step 4: Conclusion
Matching gives us A-II, B-IV, C-I, D-III, pointing directly to option (B).
Final Answer: (B)