What key concept underscores the value of FOI in a democratic society?

The key concept that underscores the value of Freedom of Information (FOI) in a democratic society is centered around the idea of full government transparency and accountability to the public. This principle is foundational to democracy, as it empowers citizens by providing them access to governmental information, thereby fostering an informed electorate. When citizens are able to access information, they can engage in meaningful discourse, make informed decisions, and hold their government accountable for its actions.

Transparency acts as a safeguard against corruption and abuse of power, as it allows the public to scrutinize governmental processes and decisions. This openness encourages greater public participation in the democratic process and reinforces the trust between the government and its citizens. The other options do not reflect democratic values as they either advocate for lack of information or restrict the public's ability to inquire about government operations. Thus, the concept of transparency and accountability encapsulated in the correct answer is critical for the health and functionality of a democratic society.