The Assam State Agricultural Marketing Board plays a role in food security by:

Regulating markets
Ensuring fair prices for farmers
Developing storage infrastructure
All of the above

The correct answer is: d) All of the above.

The Assam State Agricultural Marketing Board (ASAMMB) is a state government agency that plays a role in food security by regulating markets, ensuring fair prices for farmers, and developing storage infrastructure.

ASAMMB regulates markets by setting up and maintaining markets, ensuring that they are fair and competitive, and preventing unfair trade practices. This helps to ensure that farmers get a fair price for their produce and that consumers have access to affordable food.

ASAMMB also ensures fair prices for farmers by buying produce from them at a minimum support price (MSP). This helps to protect farmers from price fluctuations and ensures that they have a stable income.

ASAMMB also develops storage infrastructure by building and maintaining warehouses and cold storage facilities. This helps to ensure that food is stored safely and that it is available throughout the year.

Overall, ASAMMB plays a vital role in food security by regulating markets, ensuring fair prices for farmers, and developing storage infrastructure.