Explanation:

- Brinda Karat is a prominent leader of the Communist Party of India (Marxist). She has played significant roles within the party but was not the General Secretary of CPI.

- Sujan Chakrabarti is another leader known for his work with left parties in India, but he hasn't held the position of General Secretary of CPI.

- S Sudhakar Reddy served as the General Secretary of the Communist Party of India before stepping down in 2019.

- D Raja is the correct answer. He became the General Secretary of the Communist Party of India in 2019, succeeding S Sudhakar Reddy.

Your answer is right