Explanation:

- Correct Answer: Option 1 - Gotabaya Rajapaksa

- As of February 2020, Gotabaya Rajapaksa was the President of Sri Lanka. He assumed office on November 18, 2019, after winning the presidential election held on November 16, 2019.

- Option 2 - Chandrika Kumaratunga

- Chandrika Kumaratunga served as the President of Sri Lanka from 1994 to 2005. Her presidency was notable for efforts towards constitutional reform and peace processes with Tamil separatists.

- Option 3 - Maithripala Sirisena

- Maithripala Sirisena served as the President from January 9, 2015, to November 18, 2019. His term was marked by political reform efforts and challenges in governance.

- Option 4 - D.M. Jayaratne

- D.M. Jayaratne was not a president but served as the Prime Minister of Sri Lanka from 2010 to 2015.