The correct answer is: A. Dantewara-Rajnandgaon-Kondagaon
The sex ratio in Dantewara district is 976 females per 1000 males, while the sex ratio in Rajnandgaon district is 967 females per 1000 males, and the sex ratio in Kondagaon district is 964 females per 1000 males. Therefore, the sequence of the districts in descending order of sex ratio is Dantewara, Rajnandgaon, and Kondagaon.
Option B is incorrect because the sex ratio in Kondagaon district is higher than the sex ratio in Rajnandgaon district.
Option C is incorrect because the sex ratio in Kondagaon district is higher than the sex ratio in Rajnandgaon district.
Option D is incorrect because the sex ratio in Rajnandgaon district is higher than the sex ratio in Dantewara district.
Option E is incorrect because the sequence of the districts in descending order of sex ratio is not given in any of the options.