CAZRI does research on

Answer: Option A

CAZRI researches Arid plants and crops.
The Central Arid Zone Research Institute (CAZRI) is one of the biggest research institutes of the Indian Council of Agricultural Research.
CAZRI has the distinction of being one of the first institutes in the world exclusively devoted to arid zone research and development.
The institute conducts multi-disciplinary research to seek solutions to the problems of farming in arid regions of the country.