Soil surveys are important for:

The correct answer is: d) All of the above

Soil surveys are important for mapping soil types, understanding soil properties, and land-use planning.

• Mapping soil types is important for understanding the distribution of different soil types in an area. This information can be used to plan for land use, agriculture, and other activities.
• Understanding soil properties is important for assessing the suitability of a soil for a particular use. For example, a soil that is high in clay may be unsuitable for building a road, but it may be well-suited for growing crops.
• Land-use planning is important for ensuring that land is used in a sustainable way. Soil surveys can provide information on the best use for a particular piece of land, such as agriculture, forestry, or development.

In addition, soil surveys can be used to:

• Identify areas of soil contamination
• Monitor soil erosion and degradation
• Assess the impact of climate change on soil
• Protect soil resources

Overall, soil surveys are an essential tool for understanding and managing our soil resources.