Which of the following is an example of floor price?

The correct option is Minimum Support Price for Foodgrain.

A price floor (or floor price) is a government-imposed price control or limit on how low a price can be charged for a product, commodity, or service. For a price floor to be effective, it must be set above the market-clearing equilibrium price. This prevents the price from falling below a certain level, protecting producers or suppliers.

The Minimum Support Price (MSP) for foodgrains is a classic example of a price floor:
1. Purpose: It guarantees farmers a minimum price for their crops, safeguarding their income against market volatility and supply gluts.
2. Mechanism: If the market price falls below the MSP, the government steps in to purchase the produce at the MSP, ensuring that the actual price farmers receive does not fall below this established floor.

Here is why the other options do not represent a floor price:
- Price printed on any article: This represents the Maximum Retail Price (MRP), which is a price ceiling (an upper limit on price) rather than a floor price.
- Price taken by Seller / Price asked by buyer to buy: These are market-determined transaction or bid prices and do not represent regulatory price control limits.