43rd B.P.S.C. (Pre) 1999
In demography, the sex ratio refers to -
aFrom the number of women in a country
bFrom the number of men in a country
cFrom the ratio of women to every thousand men✓ Correct
dFrom the ratio of men to every thousand women
Explanation
The number of females per 1000 males is expressed as the sex ratio. Sex ratio = $$ \frac{Number of Females}{Number of Males} \times 100 $$
economic-social-development