Explanation:

Amid Covid-19 Namath Basai, the State government’s unique programme of teaching tribal children in their mother tongue, has become a runaway hit in Kerala’s tribal districts. These languages are ‘Irula, Muduka and Kurumba’ tribes belong to India state of Kerala and reside in the Western ghats. 
Irula or Irular Tribe

• Occupation: Agriculturists
• Grow Paddy, Ragi, dhal, plantains, chillies and turmeric
• Religion: The majority worship Vishnu under the name of Rangaswami and Siva without differentiation. Some practice animism and worship the tiger.

Mudugars or Muduka

• Have social divisions at kal (clan) level.
• Traditional Occupation: Food gatherers and hunters.
• Religion: Hinduism

Kurumba Tribe

• Popularly known as Mala Pulayans, Hill Pulayans and Pamba Pulayans.
• Traditional occupation: Foraging and shifting cultivation, Skilled in manufacture of baskets and mats
• Religion: Animism (belief in spirituality of objects, places, and creatures) and Totemism (Worship of any species of plants or animals thought to possess supernatural powers)

Hence option 3rd is correct.