The idea behind is that people of the same generation have many experiences in common, therefore are similar in some of their attitudes and behaviors

Cohort marketing.

Explanation:

When it comes to marketing, the term "cohort" refers to specific experiences, events or other factors shared by a group of consumers. These cohorts are used to identify and target segments of the market that, although they may fit into other models, are more effectively grouped and treated as one.

Cohorts are the things that separate specific groups of people even within their demographic groupings. For example, men between the ages of 55 and 70 are a demographic grouping. Men between the ages of 55 and 70 who share the experience of having served in the Navy on board aircraft carriers are a cohort. Cohorts are far more specific than standard demographic groupings and as such are a valuable tool for precisely targeted marketing campaigns and niche businesses.

what do we need our phalanges for?

the correct answer is c