Select the appropriate term from the drop$-$down list to match each definition. Cognitive ageMultigenerational householdSubjective discretionary income $($SDI$)$Age cohortGenerationDemographicsClass to massMature marketGerontographicsCohort analysis $1.$ Term used to describe a population in terms of its size, distribution, and structure$2.$ Another name for generation; A group of persons who have experienced a common social, political, historical, and economic environment$3.$An estimate by the consumer of how much money he or she has available to spend on nonessentials$4.$Another name for age cohort; A group of persons who have experienced a common social, political, historical, and economic environment$5.$Term used to describe consumers with modest incomes who often want to trade up to luxury brands$6.$A household with either two or more adult generations or with both grandparents and grandchildren under the same roof$7.$Ones perceived age; a part of ones self$-$concept$8.$Consumers $55$ years of age and over$9.$ A segmentation approach to the mature market that incorporates aging processes and life events related to the physical health and mental outlook of older consumers$10.$ The process of describing and explaining the attitudes, values, and behaviors of an age group as well as predicting its future attitudes, values, and behaviors