Which entity is responsible for making arrangements providing air services between the Hong Kong Special Administrative Region and other parts of the People's Republic of China?

The responsibility for making arrangements regarding air services between the Hong Kong Special Administrative Region (HKSAR) and other parts of the People's Republic of China (PRC) rests with the People's Republic of China. This is due to the principle of "one country, two systems" established under the Basic Law, which grants Hong Kong a high degree of autonomy in managing its own affairs except in foreign affairs and defense, which are the prerogatives of the central government in Beijing.

The Central People's Government (CPG) in the PRC has jurisdiction over matters related to international relations and cross-boundary transport, which includes the arrangement for air services. This oversight ensures that the air traffic and international routes between Hong Kong and other regions in mainland China are regulated in accordance with national laws and policies, making it clear that such arrangements are ultimately governed by the PRC, even as Hong Kong operates under its own legal and administrative systems.

Other options do not hold the responsibility for this jurisdiction. The European Union and the United States are not directly involved in the internal arrangements between Hong Kong and mainland China. The Asia-Pacific region is a geographical descriptor and does not indicate any authority or governing body that manages air services specifically between the HKSAR and the PRC.