The correct answer is c) Kalahandi.
Kalahandi is a district in the Indian state of Odisha. It is one of the most backward districts in the country, with a high incidence of poverty, malnutrition, and disease. Sickle cell anemia is a genetic disorder that affects the red blood cells. It is characterized by the formation of sickle-shaped red blood cells, which can block blood vessels and lead to serious health problems. The prevalence of sickle cell anemia is highest in the tribal areas of Kalahandi.
The other options are incorrect. Koraput is a district in the Indian state of Odisha. It is a tribal-dominated district with a high incidence of poverty and malnutrition. However, the prevalence of sickle cell anemia is not as high as in Kalahandi. Sundargarh is a district in the Indian state of Odisha. It is a mineral-rich district with a high incidence of industrial pollution. However, the prevalence of sickle cell anemia is not as high as in Kalahandi. Ganjam is a district in the Indian state of Odisha. It is a coastal district with a high incidence of malaria. However, the prevalence of sickle cell anemia is not as high as in Kalahandi.