Detailed Explanation:

Answer: Option 4 — 1, 2, 3 and 4

All four factors significantly influence rice prices in India. The government employs multiple policy tools—MSP guarantees, FCI procurement and sales, buffer stock management, and subsidized distribution through PDS—creating a complex web of interventions that collectively shape market availability and consumer prices.

✅ Statement 1 – Minimum Support Price (MSP): Correct MSP guarantees a floor price for farmers; when procurement occurs at MSP levels, it reduces market supply and can push up consumer prices.

✅ Statement 2 – Government's Trading: Correct FCI and other government agencies' procurement and sale decisions directly affect market supply dynamics and rice availability in the open market.

✅ Statement 3 – Government's Stockpiling: Correct Buffer stock management affects supply; depleted stocks can create shortages and price spikes, while excessive stocks can depress prices.

✅ Statement 4 – Consumer Subsidies: Correct Subsidized rice through PDS increases effective demand and can exert upward pressure on overall market prices by boosting consumption.