Explanation:

- Amitabh Kant (Option 1): He was the CEO of NITI Aayog as of September 2021. A well-known Indian bureaucrat, he played a key role in various government initiatives.

- Urjit Patel (Option 2): He was the former Governor of the Reserve Bank of India, not associated with NITI Aayog as CEO.

- Shaktikanta Das (Option 3): He is the current Governor of the Reserve Bank of India (since 2018) and has no role as CEO of NITI Aayog.

- Dr. Rajiv Kumar (Option 4): He was the Vice Chairman of NITI Aayog, not the CEO.

Your selected answer: Option 1 - Amitabh Kant.