The correct answer is: d) All of the above.
Promoting climate-resilient agriculture can help ensure food security in Assam by adopting drought-tolerant crop varieties, developing water-saving irrigation methods, and diversifying cropping systems.
Drought-tolerant crop varieties are crops that can withstand periods of drought without suffering significant yield losses. These varieties are often developed through plant breeding techniques that select for genes that confer drought tolerance. Drought-tolerant crop varieties can help farmers to reduce their risk of crop failure during droughts.
Water-saving irrigation methods are irrigation methods that use less water than traditional irrigation methods. These methods include drip irrigation, micro-irrigation, and deficit irrigation. Water-saving irrigation methods can help farmers to conserve water and reduce their irrigation costs.
Diversifying cropping systems is the practice of growing a variety of crops in the same field. This practice helps to reduce the risk of crop failure due to pests, diseases, and climate variability. Diversifying cropping systems can also help to improve soil fertility and reduce the need for pesticides.
All of these measures can help to ensure food security in Assam by reducing the risk of crop failure and increasing the productivity of agricultural land.