What describes the characteristics of gravel, sands, and silts?

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Gravel, sands, and silts are classified as cohesionless materials, meaning they do not exhibit significant cohesion forces that hold particles together. This characteristic is fundamental to their behavior in various applications, particularly in construction and geotechnical engineering. Being non-plastic indicates that these materials do not retain a significant ability to deform plastically under stress, which is a crucial property for ensuring stability and support for structures built upon or with these materials. Furthermore, the term granular refers to the physical form of these materials, which consist of distinct grains or particles that allow for effective drainage and reduce the risk of issues like liquefaction in saturated conditions. These characteristics make gravel, sands, and silts suitable for a wide range of engineering applications, including foundations, drainage layers, and filtration systems. The other options refer to properties that do not accurately apply to gravel, sands, and silts, as they can be cohesive, compressible, or weak in different contexts, but these materials are primarily known for their granular, cohesionless nature.