Explanation:

Option 1: Ho, Tada, Namboodris

- The Ho are an indigenous tribe in India, but they do not traditionally practice polyandry.

- The Tada are not widely known in ethnographic studies related to polyandry.

- Namboodris, a Brahmin community in Kerala, practice matrilineal traditions, not typically polyandry.

Option 2: Todas, Kotas, Khasas

- The Todas, a tribe in the Nilgiris of India, are known for their polyandrous practices.

- The Kotas, also in the Nilgiris, culturally similar to the Todas, have had polyandrous traditions.

- The Khasas from Uttarakhand have historical polyandrous practices.

Option 3: Kotas, Gonds, Moplas

- The Gonds are a large Adivasi group in central India, generally not known for polyandry.

- Moplahs are a Muslim community in Kerala, and do not practice polyandry.

Option 4: Nadan, Ongis, Jarwas

- The Nadars or Nadans are a Tamil community, but they don't practice polyandry.

- Ongis and Jarwas are tribes from the Andaman and Nicobar Islands, not known for polyandry.