The question asks about the election process for the members of the Indian Constituent Assembly. Let's break down the options and understand why the correct answer is Indirectly by the members of the Provincial Legislative Assemblies.

1. Directly by the people of India: This option suggests that the Constituent Assembly members were elected by a direct vote of the Indian populace. However, during the time of the Constituent Assembly elections, direct elections were not conducted for its members.
2. Indirectly by the members of the Provincial Legislative Assemblies: This is the correct answer. The members of the Indian Constituent Assembly were elected indirectly by the Provincial Legislative Assemblies. This method was part of the plan outlined by the Cabinet Mission in 1946, which structured the assembly's formation.
3. Nominated by the Governor-General: This option is incorrect since the members were not directly nominated by the Governor-General. Although, a few members were nominated to represent princely states based on agreements, this was not the method for general assembly member election.
4. Indirectly by the Provincial Committees of the Congress: This is also incorrect. While the Indian National Congress was significantly involved, the election process was formalized through provincial legislative bodies rather than internal committees of any political party.

Therefore, the correct and historically accurate answer is that the members of the Indian Constituent Assembly were elected indirectly by the members of the Provincial Legislative Assemblies. This method ensured representation from various provinces and princely states, laying a diverse foundation for drafting the Constitution of India.