Final answer:
Secondary markets are often referred to as exurbs; these are the communities that are located beyond the suburbs and are marked by having residents of higher socioeconomic status who seek space and can manage a longer commute.
Step-by-step explanation:
Secondary markets can be described as communities that arise farther out than the suburbs and are typically populated by residents of high socioeconomic status. These areas are sometimes referred to as exurbs, and they are communities that exist outside the ring of suburbs. Exurbs are often more spacious and are chosen by wealthier families who can afford a longer commute and more space. These communities, along with the suburbs and metropolitan areas, contribute to forming a metropolis. The Census Bureau classifies smaller cities with populations between 10,000 and 50,000 people as "urban clusters", but when they are the focal commuting point of a surrounding region, they are designated as a Micropolitan Statistical Area (µSA), which can have a substantial population when including the surrounding semi-rural or suburban populations.