Explanation:

• Bishnoi Tribe of Rajasthan: Bishnois consider trees as sacred and protect the entire ecosystem including animals and birds that exists in their villages.
• The tribe has organized their own Tiger Force which is a brigade of youth actively pursuing wildlife protection.
• Chenchu Tribe of Andhra Pradesh: They are involved in tiger conservation at Nagarjunasagar Srisailam Tiger Reserve (NSTR).
• The tribe has been coexisting with tigers and wild animals for a long without disturbing the ecological balance, which ensures enough water and fodder for the herbivores.
• Maldhari Tribe in Junagadh (Gujarat): The success of lion conservation in the Gir forest area is due to the peaceful coexistence of tribes with lions.
• Bugun Tribe of Arunachal Pradesh: The tribe using Community-led conservation initiatives and traditional knowledge helped to protect the critically endangered bird Bugun Liocichla.
• For its efforts, Singchung Bugun Community Reserve won the India Biodiversity Award 2018.
• Nyishi tribe of Arunachal Pradesh in conserving hornbills in the Pakke/Pakhui Tiger Reserve.
• Recently, the government of Arunachal Pradesh declared the Pakke Paga Hornbill Festival (PPHF)–the state’s only conservation festival, as a ‘state festival’.
• Hence, option (c) is the correct answer.