Option 1 states that Plan Balkan was a plan devised by Mountbatten to transfer power to separate provinces or confederation of provinces. It mentions that the Bengal and Punjab assemblies were given the option to vote for the partition of their provinces. This means that under Plan Balkan, the power would be transferred to individual provinces or groups of provinces, and the provinces of Bengal and Punjab were given the choice to decide whether they wanted to be part of a separate country or remain united with India.

Option 2 suggests that Plan Balkan was devised by Pethick Lawrence to give autonomy to Indian princes and provinces. This option is not correct as Plan Balkan did not specifically focus on Indian princes or provinces, but rather on the transfer of power to separate provinces.

Option 3 states that Plan Balkan was devised by the Muslim League and the Congress to provide autonomy to Indian provinces to form confederations. This option is not correct as Plan Balkan was devised by Mountbatten, not the Muslim League and the Congress.

Option 4 mentions that Plan Balkan was devised by Mountbatten to allow Indian princes the freedom to either be independent or to join either India or Pakistan. This option does not accurately describe Plan Balkan, as it primarily focused on the transfer of