The correct answer is (d), pulses.
The National Food Security Mission (NFSM) was launched in 2007 with the objective of increasing production of rice, wheat, pulses, and oilseeds. The mission has been successful in increasing production of all four crops, but pulses have seen the slowest growth.
There are a number of reasons for this. First, pulses are a relatively low-value crop, so farmers have been less incentivized to grow them. Second, there has been a decline in the area under pulse cultivation. This is due to a number of factors, including the expansion of cultivation of other crops, such as rice and wheat, and the conversion of agricultural land to non-agricultural uses. Third, there has been a decline in the productivity of pulse crops. This is due to a number of factors, including the use of outdated cultivation practices, the lack of access to quality seeds and fertilizers, and the prevalence of pests and diseases.
The government has taken a number of steps to address these challenges. These include providing subsidies to farmers who grow pulses, promoting the cultivation of high-yielding varieties of pulses, and providing training to farmers on improved cultivation practices. However, more needs to be done to increase the production of pulses. This is important not only for food security, but also for the health of the environment. Pulses are a good source of protein and fiber, and they help to improve soil fertility.