Answer: The Nepal Praja Parishad
Explanation: The Nepal Praja Parishad (Nepali: नेपाल प्रजा परिषद) was the first attempt to form an organization to lead the revolution against the Rana dynasty in Nepal. Led by Tanka Prasad Acharya, the group was founded in 1936 and is seen as the first political party in Nepal. The organization collapsed after its plot to assassinate multiple members of the Rana regime was discovered, and some of its key members were executed.