Answer:
Demographic
Step-by-step explanation:
A market is segmented so as to narrow down a large market into a narrow base, or a target market. This helps the organization to be better focused on providing its services to these target groups of people. A market can be segmented on the basis of demography, psychography, behavior, and geography. Demography deals more with statistical data of the population being studied and would typically include; age, gender, race, income levels, etc.
So, when the manufacturer Mike and Ike changes its packaging and developed contests all geared to 12-17-years-old, he has segmented the market according to demography and age.