Explanation:

- 2020: Sonu Sood released his autobiography, "I Am No Messiah," in 2020. The book details his journey and humanitarian efforts, especially highlighted during the COVID-19 pandemic when he helped migrant workers reach their homes across India.

- 2014: This year is unrelated to the release of Sonu Sood's autobiography. During this time, he was primarily focused on his acting career in Indian cinema.

- 2018: This year is also unrelated to the book release. Sonu Sood was involved in numerous film projects during 2018.

- 2007: This year is not linked to his autobiography either. In 2007, Sonu Sood was primarily known for his roles in films rather than for literary contributions.

Correct Answer: 2020