Final answer:
Stable governance is present in some but not all of the world's four major population clusters, influenced by factors like climate change, terrorism, and economic conditions.
Step-by-step explanation:
The question asks whether stable governance is a part of the four major population clusters in the world. The correct answer is c. Yes, stable governance is present in some but not all population clusters. This is because population clusters can exist in various types of political environments, and not all are characterized by a stable government. For instance, while regions such as Europe may have a history of stable governance, other areas with significant population clusters, like certain parts of Southeast Asia or West Africa, might experience varying degrees of political instability. Factors such as climate change, terrorism, and economic conditions influence governance stability, and these vary across different population clusters. Moreover, promoting democracy and good governance can be vital for political stability, which in turn impacts the well-being of population clusters.