In this question, the correct statement is option 1: "The rank of Second Lieutenant has been abolished." To better understand each option, let`s dissect them:

Option 1: The statement suggests that the rank of Second Lieutenant no longer exists. If this statement is true, it means that within the hierarchy of military ranks, there is no longer a rank called Second Lieutenant.

Option 2: This statement claims that the Chief of Army Staff holds the rank of Field Marshal. However, this is incorrect. The Chief of Army Staff in India holds the rank of General, not the rank of Field Marshal.

Option 3: According to this statement, all officers assigned to Andaman and Nicobar Islands wear the ranks of the Indian Navy. This statement is also incorrect. Officers in the armed forces are assigned ranks based on their position and seniority, not based on their location.

Option 4: The statement compares the ranks of Major General and Lieutenant General. It suggests that the rank of Major General is higher than the rank of Lieutenant General. This statement is incorrect. In the military hierarchy, Lieutenant General is a higher rank than Major General.

In conclusion, option 1 is the correct statement. Alert - The correct answer should be Option 4: "The rank of