Final answer:
Depend® targets the elderly adult market by utilizing demographic segmentation for its disposable undergarments, responding to shifts in population and demand.
Step-by-step explanation:
Depend® has segmented the sale of disposable undergarments on a demographic basis. This segmentation strategy involves identifying and targeting specific groups of the population based on characteristics such as age, gender, income, and family status. In this instance, by targeting the elderly adult market, Depend® is focusing on a demographic group characterized by their age. Changes in the composition of the population, specifically the increasing proportion of elderly citizens, influence the demand for products catered to that segment. As the elderly population grows, there is an increased demand for products such as nursing homes, hearing aids, and in this case, adult undergarments.