Concept:Caste hierarchy refers to a structured ranking of all caste groups in a society, arranged from the highest to the lowest level.Explanation:In a caste hierarchy, every caste has a fixed position based on birth. This ladder-like arrangement includes all castes, not just a few. The highest castes, such as Brahmins, are at the top, and the lowest castes, such as Shudras, are at the bottom. This system is a form of social stratification that is hereditary and often linked to occupation and religious status. Because all castes are placed in order from top to bottom, the correct description is a ladder-like formation where all caste groups are arranged from the 'highest' to the 'lowest'.Answer:C. A ladder like formation in which all the caste groups are placed from the 'highest' to the 'lowest' castes.