Explanation:

- Atal Tinkering Labs is an initiative by NITI Aayog aimed at fostering creativity and innovation in students. It provides young minds with resources and an environment to develop their curiosity and problem-solving skills through hands-on experimentation and learning.

- Option 1: National AYUSH Mission focuses on promoting traditional Indian systems of medicine like Ayurveda, Yoga, Unani, Siddha, and Homeopathy, and is unrelated to the establishment of tinkering labs.

- Option 3: Central Board of Secondary Education (CBSE) is involved in curriculum development and examination for schools in India and does not directly manage innovations like tinkering labs.

- Option 4: Reserve Bank of India (RBI) is the central banking institution of India, focusing on monetary policy and regulation of financial institutions, and does not engage in education initiatives like tinkering labs.

Correct Answer: Option 2 (NITI Aayog)