The correct option is C Cowpea
In order to overcome crop losses by infectious diseases, the Indian Agricultural Research Institute (IARI) has developed many disease resistant crop varieties by conventional plant breeding programmes.
Pusa Komal is one such variety of cowpea that is resistant to bacterial blight caused by Xanthomonas.
As the farmer has purchased seeds of Pusa Komal, the farmer is probably planning to cultivate cowpea in the coming agricultural season.
There are other disease resistant varieties of plants like Pusa Shubhra and Pusa Snowball K-1 which are varieties of cauliflower that are resistant to the black rot and curl blight black rot bacterial diseases.
Himgiri is a wheat variety that is resistant to leaf and stripe rust and hill bunt. Both diseases are caused by fungus.
Pusa Sadabahar is a virus resistant variety of chilli that is resistant to tobacco mosaic virus, chilli mosaic virus and leaf curl virus.