As we move down the hierarchical order of caste in the caste system:-

Both, ritual purity and social status decrease

The correct answer is Option (3) → Both, ritual purity and social status decrease

In the traditional caste system, as one moves down the hierarchical order, individuals from lower castes typically have lower ritual purity and social status compared to those in higher castes. Therefore, ritual purity decreases and social status increases as you move up the hierarchy.

"The hierarchical ordering of castes is based on the distinction between ‘purity’ and ‘pollution’. This is a division between something believed to be closer to the sacred (thus connoting ritual purity), and something believed to be distant from or opposed to the sacred, therefore considered ritually polluting. Castes that are considered ritually pure have high status, while those considered less pure or impure have low status. As in all societies, material power (i.e., economic or military power) is closely associated with social status, so that those in power tend to be of high status, and vice versa. "