The correct option is B The city has 941 females for every 1000 males.
Sex ratio is defined as the number of females per 1000 males in a given population. As per the census data of 2011, the female number stood at 943 against one thousand male population - or, in other words, the sex ratio was 943. In the given question, sex ratio of the city is 941, this means that the number of females per 1000 males is 941.