Answer:
The interviewer should explain that questions about origin and race are important to build a demographic census and better understand the population of the community.
Step-by-step explanation:
Demographic census is a statistical study of the population of a region. It allows various information about how the population is formed, allowing improvements and adaptations to be made to improve the experience of different people. For this reason, governmental questionnaires on health, education, among others, often have questions such as origins and races, which seem to be very personal questions, but which allow valuable conclusions about how the population is formed.