Which of the following factors influences the permeability of soil?

Permeability of soil refers to the ability of soil to transmit water and air through its pores. This property is influenced by several key factors, all of which are mentioned in the question.

Organic matter content plays a significant role in permeability. Higher amounts of organic matter can enhance the soil structure by promoting aggregation and creating larger pore spaces, which can facilitate water movement.

Soil texture, which describes the proportion of sand, silt, and clay within the soil, is also a critical factor. Sandy soils, for example, typically have larger particles and spaces, making them more permeable compared to clay soils, which consist of much smaller particles that pack closely together and create less space for flow.

Soil compaction affects permeability by reducing pore spaces. When soil is compacted, the air spaces between soil particles are diminished, leading to a decrease in the soil's ability to allow water and air to pass through it.

Since all these factors—organic matter content, soil texture, and soil compaction—combine to influence how easily water and air can move through the soil, the choice indicating that all of these factors impact permeability is indeed correct.