Option 2, the price printed on biscuit packets, is an example of a price ceiling. A price ceiling is a government-imposed maximum price that can be charged for a good or service. It is set below the equilibrium price in order to make the product more affordable for consumers. In this case, the price printed on biscuit packets is the maximum price that can be charged for the biscuits. This means that the price cannot exceed the amount printed on the packet.

Option 1, fares charged by airlines in India, is not an example of a price ceiling. The fares charged by airlines are determined by market forces and competition rather than being set by the government.

Option 3, minimum support price for cane growers, is not an example of a price ceiling. The minimum support price is the price at which the government guarantees to buy crops from farmers, ensuring that they receive a fair price for their produce.

Option 4, minimum wages fixed by state governments, is not an example of a price ceiling. Minimum wages are the lowest wage rate that employers must legally pay their workers and are aimed at ensuring a minimum standard of living for workers. These wages are set by the government to prevent exploitation of workers.