Step 1: Understanding the Concept:
The question requires identifying which of the given names does not refer to a tribal community (Adivasi/Scheduled Tribe) in India.
Step 2: Detailed Explanation:
- (A) Santhal: One of the largest and most well-known tribal groups in India, primarily found in Jharkhand, West Bengal, and Odisha.
- (B) Munda: A major tribe of the Chotanagpur Plateau region, primarily in Jharkhand.
- (C) Naga: A group of several related tribes inhabiting the northeastern states of India, particularly Nagaland.
- (D) Ravidas: This refers to the Ravidassia community, who are followers of the 15th-century Bhakti saint Guru Ravidas. This community is classified as a Scheduled Caste (specifically within the Chamar caste cluster), not a Scheduled Tribe.
Step 3: Final Answer:
Ravidas refers to a Scheduled Caste community, not a tribe.