Option 1 suggests that the Indian National Army (INA) was not part of the RIN Mutiny. However, this is incorrect. The INA, led by Subhas Chandra Bose, played a crucial role in the RIN Mutiny. They supported the mutineers, and their presence and support strengthened the resistance against the British rule.

Option 2 suggests that HMIS Talwar and the hunger strike by naval ratings were not part of the RIN Mutiny. This statement is also incorrect. HMIS Talwar was a Royal Indian Navy ship that played a significant role in the mutiny. The hunger strike by naval ratings was one of the key methods used by the mutineers to demand better conditions and treatment.

Option 3 correctly states that Lord Irwin was not part of the RIN Mutiny. Lord Irwin was the Viceroy of India from 1926 to 1931 and was not directly linked to the mutiny.

Option 4 suggests that only Lord Irwin was not part of the RIN Mutiny. This is incorrect as the Indian National Army, HMIS Talwar, and the hunger strike were all part of the mutiny.

Therefore, the correct answer is option 3: 1 and 4. The