Fat tire’s 20-year life would indicate their success at:

It would indicate their success at relationship marketing. Relationship marketing is a feature of customer relationship management (CRM) that centers on customer loyalty and long-term customer engagement instead of shorter-term goals like customer acquisition and individual sales. The aim of relationship marketing (or customer relationship marketing) is to make strong, even emotional, client connections to a product that can lead to ongoing business, free word-of-mouth advertising and data from customers that can generate leads.

"social stratification refers to the way people are ranked and ordered in society. in western societies, stratification is primarily seen and understood as a result of socioeconomic status, which produces a hierarchy in which access to resources, and possession of them, increases from the lower to the upper strata"

answer; /// i believe that the correct answer is (a) making presentations;