A. aridsols
B. vertisols
C. histosols
D. andisols
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Based on factual data, the heavy day soils that show significant expansion and contraction due to the presence or absence of moisture are called vertisols.
Vertisols are highly clayey soils with a high content of smectite clays. These soils undergo large expansions and contractions due to changes in soil moisture.
This property makes them difficult to work with as they can cause problems with settlements and foundation stability. They are usually found in areas with moderate to high rainfall and are most abundant in tropical and subtropical regions.