पायाभूत व जड उद्योगावर भरीव खर्च व सार्वजनिक क्षेत्र वाढीवर जोर कुठपर्यंत चालू होता ?

The correct answer is Option C (Eighth Plan).

Key Points:
• Mahalanobis Strategy & Heavy Industries: India's economic planning from the Second Five-Year Plan (1956-61) onwards was anchored on the Mahalanobis model, prioritizing rapid industrialization and heavy capital goods industries under state ownership (public sector).
• ⏳ Duration of Heavy Industry Focus: This core strategy of massive public sector investment in basic and heavy industries continued dynamically across early planning decades right up until the Eighth Five-Year Plan (1992–97), following which structural economic reforms shifted focus toward liberalization, privatization, and market-led growth.
• Other Options Overview: While the Third Plan initiated heavy industrial momentum, the strategic policy umbrella emphasizing public sector dominance persisted until the Eighth Plan transition.
• Key Takeaway: Massive public sector investments in basic and heavy industries remained a core planning strategy up until the Eighth Five-Year Plan.