Final answer:
The best system of government is often considered to be democracy, which is the most prevalent in developed countries, as it allows for citizen participation and helps prevent oligarchic control, though it is not without its flaws.
Step-by-step explanation:
The best system of government may vary depending on the views of the individuals within a nation, but in terms of widespread adoption and success, the most prevalent one in developed countries today is democracy. Democracy allows for a pluralistic approach where citizens can express their opinions through votes, consequently affecting their nation's trajectory. This inclusive nature may diminish the risk of domination by a small group of powerful individuals and ensures a broader representation of the masses. However, it is important to recognize that democracy is not flawless and comes with its own set of challenges, which require continuous analysis and refinement to ensure fairness and effectiveness in governance.