Final answer:
The difference between the Grand Council and the Common House of Assembly is their mode of formation and function: the Grand Council is appointed and serves in an advisory capacity, whereas the Common House of Assembly includes directly elected representatives who deal with legislative matters.
Step-by-step explanation:
The difference between the Grand Council and the Common House of Assembly relates to their functions and manner of selection. The options presented in the question suggest different roles and methods of formation for these bodies. Based on the provided context of historical and contemporary governance systems, we understand that legislative bodies can be either elected by the public, as seen in the example of colonial assemblies and municipal governments, or appointed by an executive authority, a practice seen in monarchies or other centralized governments where councils may be advisory or lack independent legislative power.
Looking at the colonial assembly that had the power to initiate legislation and controlled the budget, members were directly elected and represented local entities. In contrast, the Grand Council, a precursor to the modern parliamentary system, was formed of nobles and clergy representing the people but under the king's authority. With this understanding, the correct answer seems to be option c) where the Grand Council is an appointed advisory body, while the Common House of Assembly consists of elected representatives.