Explanation:

- Pattabhi Sitaramayya: He was an influential Congress leader but was not the party president at the time of India's independence in 1947.

- Jawaharlal Nehru: He later became the first Prime Minister of India but was not the Congress president at the time of independence.

- Abul Kalam Azad: He served as the Congress president during critical years before independence but not at the time of independence itself.

- J.B. Kripalani: He was the President of the Indian National Congress at the time of India's independence in 1947.

- Correct Answer: J.B. Kripalani (Option 4)