Answer:
the S-T-P approach (market segmentation)
Explanation:
Segmenting, targeting, positioning is a well-known marketing model applicable when addressing a diverse customer base. It is synonymous with market segmentation.
In order for Jenna's plan to be effective, it has to tackle each target group specifically, according to their own characteristics, preferences and habits. That way, the company can tailor their marketing efforts towards each target group respectively.