Which of the following components are part of soil composition?

The correct choice reflects the typical composition of soil, which is a complex mixture of various components, including mineral matter, water, air, and organic material. In option C, stating 25% water and 45-48% mineral matter aligns well with the general understanding of soil composition, which usually contains about 45% mineral matter, 25% water, 25% air, and around 5% organic matter.

This balance is crucial because mineral matter provides the essential nutrients that plants need, water acts as a solvent for these nutrients, and air is necessary for the respiration of soil organisms. Understanding this composition is fundamental for effective land management and agriculture, as it affects factors like drainage, fertility, and plant growth.

The other options do not accurately represent the complexity of soil composition. For instance, having 100% mineral matter neglects the essential roles of water, air, and organic matter in the soil environment. Additionally, the balance of air and water presented in another option does not align with standard soil physical properties. Hence, option C is the most comprehensive and accurate description of soil composition.