Which of the following correctly defines crystalline solids?

Crystalline solids are defined by their distinct lattice structure, which is organized in a regular, repeating pattern. This arrangement results in a well-defined geometric shape, and the particles (atoms, ions, or molecules) in a crystalline solid are arranged in a highly ordered fashion. This ordering contributes to the consistent physical properties observed in crystalline materials, such as sharp melting points and distinct shapes.

In contrast, solids with irregular and unordered structures are classified as amorphous solids, which do not have a regular arrangement of particles. The concept of having no definite shape is more characteristic of liquids rather than solids. Additionally, the statement about being soft and yielding to pressure pertains more to specific types of materials, rather than defining crystalline solids as a whole. Thus, the accurate depiction of crystalline solids is their structured, organized lattice arrangement.