Explanation:

- Sanskritisation: This is a process in Indian society where lower caste groups adopt customs, practices, and rituals of higher castes, particularly the Brahmins, in an effort to elevate their social status. This aligns with the behavior described, where adopting vegetarianism and ritualistic worship reflects an attempt to emulate higher caste behaviors.

- Acculturation: This involves adopting cultural traits or social patterns of another group, often as a result of prolonged contact. It’s broader than Sanskritisation and doesn’t necessarily pertain to caste dynamics.

- Enculturation: The process by which individuals learn and adopt the norms and values of their own culture, often from birth. This doesn’t fit the described behavior, which involves adopting practices outside one's traditional cultural norms.

- Socialisation: The lifelong process of learning society’s norms, values, behaviors, and social skills, often through interaction with others. This is a broad term and not specific to adopting certain caste-based behaviors.