Concept:Mid-latitude regions are located in the temperate zones of both hemispheres, roughly between 30∘ and 60∘ latitude.Explanation:Low latitudes are found near the Equator, between 0∘ and 23.5∘ north and south.Mid-latitudes extend beyond the tropics toward the poles in both hemispheres.They are not limited to only the Northern Hemisphere or only the Southern Hemisphere.Among the given options, the best description is between 30∘ and 45∘ north and south.Therefore, the correct option is the one that includes both hemispheres.Answer:B. latitude 30∘ and 45∘ north and south.