Explanation:

- A) Gwalior - 3) Tantya Tope

- Tantya Tope was associated with the revolt in Gwalior.

- B) Meerut - 2) Kadam Singh

- Kadam Singh was a leader during the revolt in Meerut.

- C) Lucknow - 4) Hazrat Mahal

- Hazrat Mahal played an important role in the revolt in Lucknow.

- D) Bareily - 1) Khan Bahadur

- Khan Bahadur was a key figure in the rebellion in Bareily.

- Correct option: 3     2    4    1

- Option 1 is the correct answer.