Final answer:
Demographics is the distribution of individuals in a society based on personal attributes. It is a branch of sociology that studies population characteristics and changes over time.
Step-by-step explanation:
Demographics is/are the distribution of individuals in a society in terms of age, sex, marital status, income, ethnicity, and other personal attributes that may determine buying patterns. It is a branch of sociology that studies the population characteristics and changes over time. Demographic data is collected through sources like vital statistics registries and censuses to track population characteristics.