Sex ratio measures the balance between females and males in a population,often expressed as females per thousand males. It helps reveal gender related patterns such as discrimination or selective survival. The stem reproduces this definition almost exactly,so sex ratio is the correct term. Therefore Option B is appropriate.
Option A:
Age ratio compares different age groups and relates to age structure,not female-to-male composition.
Option B:
Sex ratio is the standard demographic indicator for females per thousand males and is widely used to assess gender balance in populations.
Option C:
Dependency ratio compares dependants to working age people,not females to males.
Option D:
Literacy ratio is not the standard term for female-to-male counts and does not match the stem’s definition.
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