Which type of bodies does the previous system established by executive authorities in Hong Kong entail?

The choice of advisory bodies is accurate because the previous governance framework in Hong Kong included entities established by executive authorities that primarily served an advisory role. These bodies were tasked with providing recommendations and insights on various aspects of governance, policy-making, and public administration.

Advisory bodies, such as the Executive Council, serve to assist government leaders in decision-making processes by bringing in diverse perspectives and expertise. They aim to inform and guide policies but do not hold legislative power. This structure is consistent with the governance model wherein the executive has significant authority while relying on these advisory entities to reflect public opinion and expert analysis.

In contrast, political parties, trade unions, and educational institutions do not fit the description of bodies created under the specific framework of executive authorities. Political parties are independent organizations that strive for representation and influence in governance but do not operate under the direct establishment of the executive authority. Trade unions focus on worker representation and rights, while educational institutions are concerned with learning and academic matters but do not function as advisory entities to the government in the same way. Thus, the concept of advisory bodies aligns accurately with the established system under the executive in Hong Kong.