Which term represents an area where there is no continuous population settlement?

The term that accurately describes an area where there is no continuous population settlement is "discontinuous ecumene." This concept refers specifically to regions where human habitation is scattered rather than dense or uniformly distributed. In a discontinuous ecumene, populations may be concentrated in specific areas while large tracts of land remain unoccupied or sparsely populated.

This is in contrast to a continuous ecumene, where human settlement is steady and widespread. The concept emphasizes the variability in population density and settlement patterns across different geographic areas. It highlights how certain regions may experience significant gaps in habitation, leading to a non-uniform distribution of people.

The other terms do not accurately reflect the idea presented in the question. A linear ecumene pertains to settlements aligned along transportation routes rather than integrally relating to the absence of continuous population. Suburban areas are described as residential regions situated on the periphery of urban centers, indicating a presence of population rather than its absence. A metropolitan region typically encompasses urban zones with significant population density and infrastructure. Thus, the distinction of "discontinuous ecumene" is critical in understanding areas devoid of continuous settlement.