Examples of population composition​

Age,sex, and ethnicity are the most commonly studied elements of population composition.

Population composition is the description of the characteristics of a group of people in terms of factors such as their age, sex, marital status, education, occupation, and relationship to the head of household so stuff like age 20, sex male, married, working as a cop are examples of population composition

what are the options?

answer; conditional stimulus will trigger a conditioned response;