Sex ratio is used to describe the number of females per ________ males.

Correct option is B

The correct answer is (b) 1000.
· Sex Ratio is defined as the number of females per 1000 males in a given population.
· It is an important demographic indicator used in population studies to assess gender balance.
· For example, as per the Census of India 2011, the national sex ratio was 940 females per 1000 males.
Additional Information:
· India's sex ratio (Census 2011): 940 females per 1000 males.
· Highest sex ratio (state-wise): Kerala (1084 females per 1000 males).
· Lowest sex ratio (state-wise): Haryana (877 females per 1000 males).