What was required for the people to call a convention to alter the Georgia Constitution?

The correct choice highlights the participatory mechanism established for the citizens of Georgia to propose changes to their state constitution. In order to call a convention to alter the Georgia Constitution, it is mandated that a majority of the state's counties contribute their approval through a gathering of signatures from voters. This requirement ensures that any proposed changes to the constitution have substantial grassroots support across various regions of the state, reflecting a wider consensus rather than relying solely on political entities or state officials.

This process empowers the citizens by requiring a demonstration of collective desire for change across multiple counties, which reinforces the concept of representative democracy in action. The necessity for a majority of counties also prevents any singular, localized faction from unilaterally pushing constitutional changes without state-wide backing.

While other options suggest different levels of government involvement or voting mechanisms, they do not align with the established procedure articulated in Georgia's legislative framework for altering the state constitution. The correct answer encapsulates the essence of democratic engagement necessary for genuine constitutional reform, ensuring that the voice of the people is integral to the process.