The correct answer is option 2, Histosol. Histosol is a soil type that is characterized by a very high content of organic matter. Organic matter refers to decaying plant and animal material that has decomposed over time. Histosols are typically found in wetland areas, such as peatlands or swamps, where the slow decomposition of organic matter leads to its accumulation in the soil.

Let`s analyze the other options to understand why they are not the correct answer:

Option 1: Vertisol is a soil type characterized by high clay content and shrink-swell properties. While organic matter can be found in Vertisols, it is not specifically known for having a very high content of organic matter.

Option 3: Gelisol is a soil type that is characteristic of cold regions, such as permafrost or areas with freezing and thawing cycles. Although organic matter can be present in Gelisols, it is not typically associated with a very high content of organic matter.

Option 4: Spodosol is a soil type commonly found in forested regions with acidic conditions. It is known for its distinctive layers or horizons, including a horizons rich in organic matter called an O horizon. However, Spodosols do not have a