Name the social practice which keeps the separation and segregation of castes without change.

The practice of caste endogamy.

The correct answer is Option 1: The practice of caste endogamy.

Option 1: The practice of caste endogamy. Correct. Endogamy requires individuals to marry within their own caste. This practice preserves caste identity, prevents the mixing of castes and plays a crucial role in maintaining the separation and segregation of castes over time.

Option 2: The practice of caste exogamy. Incorrect. Exogamy refers to marrying outside a particular social group. It encourages social mixing rather than preserving caste boundaries and therefore does not maintain the separation of castes.

Option 3: The practice of untouchability. Incorrect. Untouchability reinforces discrimination and social exclusion against certain castes, but it is not the primary mechanism responsible for maintaining caste separation across generations. The continuation of caste boundaries is mainly ensured through endogamy.

Option 4: Caste wars. Incorrect. Caste conflicts may arise due to social or political tensions, but they are not a recognised social practice that preserves caste separation or segregation.