Which of the following statement is incorrect about caste?

None of the above

Option 1: Each caste has its own place in the system which cannot be taken by any other caste — This statement is not incorrect; it is true. In the traditional caste system, each caste occupied a fixed position in the social hierarchy, and this position was considered hereditary and could not be assumed by another caste.

Option 2: Castes are supposed to be complementary and non-competing groups. — This statement is not incorrect; it is true. Traditionally, different castes performed different hereditary occupations and were viewed as complementary to one another rather than competing for the same social and economic roles.

Option 3: Castes are unequal to each other in ritual terms. —  This statement is not incorrect; it is true. The caste system is based on a hierarchy of ritual purity and pollution, with different castes occupying unequal ritual status.

NCERT: Castes are not only unequal to each other in ritual terms, they are also supposed to be complementary and non-competing groups. In other words, each caste has its own place in the system which cannot be taken by any other caste. Since caste is also linked with occupation, the system functions as the social division of labour, except that, in principle, it allows no mobility.