Answer:
Market Segments
Step-by-step explanation:
Marketing segmentation refers to dividing markets into various segments or sections, wherein each section comprises of customers with similar attributes or buying preferences.
Marketing segmentation can be based upon demography i.e based upon population , geographical which is based upon the geographical location , behavioral which is based upon customer buying habits and past purchase patterns, psychographic which is based upon the psyche or the perceptions of the buyers.
In the given case, Alex has identified commercial and real estate buyers as the segments wherein his marketing efforts need to be targeted.