Detailed Solution:
The correct answer is “It's sex ratio is 933.”.
1) Uttar Pradesh is the most populous state of India.
2) The population density of the state is 829 persons per square kilometre.
3) The sex ratio in Uttar Pradesh is 912, which is below the national average of 943, according to the census 2011.
4) The child sex ratio is 902 per thousand in the Uttar Pradesh state (as per the 2011 census).